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Observed 4:15 AM MDT at KLMO

Lyons, CO weather

Clear and 47°8°, 9°5° colder than a typical Oct 24.

Today: low 45°7° (likely 38°3° to 45°7°), high 53°12° (likely 51°11° to 61°16°).

Forecasts differ

Now 47°8°

Clear

Wind
Calm
Up to 8 mph13 km/h through 5 PM
Dew point
36°2°
Comfortable
UV index
0Low
Moderate 11 AM–4 PM · peak 4
Air today
45Good
EPA forecast · Ozone
Pressure (notable)
30.14 inHg1021 hPa
Rising fast · +0.11 inHg+3.6 hPa in 3 h

Next 2 hours

No precipitation expected in the next 2 hours.

Next 48 hours

5°3° cooler than this time yesterday (51°11° then, 47°8° now)

Good hours for
  • Dry until 6 PM
  • High 52°11° today at 1 PM
  • Drizzle tonight 6–9 PM (30%, 0.06 in1.5 mm)
  • Fog tomorrow 8–9 AM
  • Rain tomorrow night from 6 PM (70%, 0.39 in9.9 mm)
  1. This morningUp to 51°11° by 10 AM · Partly cloudy
  2. This afternoonNear 51°11° · rain chance 30% · Cloudy
  3. TonightDown to 36°2° by 5 AM · Rain 6–9 PM (30%)
  4. Tomorrow morningUp to 47°8° by 11 AM · Mostly cloudy
  5. Tomorrow afternoonNear 49°9° · rain chance 30% · Mostly cloudy
  6. Tomorrow nightDown to 40°4° by 4 AM · Rain all night (70%)
Hourly forecast, next 48 hours, in the place's local time
HourConditionsTemperatureFeels likePrecipitationWindHumidityCloud coverUV index
Sat 5aCloudy47°8° (likely 47°8° to 51°11°)46°8°0%3 mph5 km/h from NNW, gusts 8 mph13 km/h56%66%0
Sat 6aMostly clear47°8° (likely 47°8° to 50°10°)45°7°10%5 mph8 km/h from SSE, gusts 8 mph14 km/h56%42%0
Sat 7aSunny45°7° (likely 45°7° to 50°10°)43°6°10%5 mph8 km/h from ESE, gusts 6 mph10 km/h63%28%0
Sat 8aSunny46°8° (likely 45°7° to 50°10°)43°6°10%6 mph10 km/h from E, gusts 7 mph12 km/h63%37%0
Sat 9aMostly cloudy49°9° (likely 47°8° to 51°11°)46°8°10%8 mph13 km/h from NE, gusts 7 mph12 km/h58%35%1
Sat 10aSunny51°11° (likely 46°8° to 53°12°)51°11°10%8 mph13 km/h from ENE, gusts 10 mph17 km/h54%31%2
Sat 11aCloudy51°11° (likely 46°8° to 53°12°)51°11°10%8 mph13 km/h from ENE, gusts 11 mph18 km/h56%69%3
Sat 12pCloudy51°11° (likely 47°8° to 54°12°)51°11°20%, 0.01 in0.3 mm8 mph13 km/h from ENE, gusts 10 mph16 km/h56%74%4
Sat 1pCloudy52°11° (likely 48°9° to 54°12°)52°11°20%, 0.01 in0.3 mm8 mph13 km/h from ENE, gusts 11 mph17 km/h52%89%4
Sat 2pCloudy52°11° (likely 48°9° to 54°12°)52°11°20%, 0.01 in0.3 mm7 mph11 km/h from ENE, gusts 10 mph16 km/h52%86%4
Sat 3pCloudy52°11° (likely 48°9° to 54°12°)52°11°30%, 0.01 in0.3 mm7 mph11 km/h from ENE, gusts 8 mph13 km/h50%90%3
Sat 4pCloudy52°11° (likely 48°9° to 54°12°)52°11°30%, 0.01 in0.3 mm6 mph10 km/h from E, gusts 10 mph16 km/h52%94%2
Sat 5pCloudy50°10° (likely 46°8° to 52°11°)48°9°30%, 0.01 in0.3 mm6 mph10 km/h from E, gusts 10 mph15 km/h56%96%1
Sat 6pDrizzle47°8° (likely 43°6° to 50°10°)44°7°30%, 0.02 in0.5 mm6 mph10 km/h from ESE, gusts 5 mph9 km/h65%98%0
Sat 7pCloudy43°6° (likely 41°5° to 49°9°)40°4°30%, 0.02 in0.5 mm5 mph8 km/h from ESE, gusts 5 mph8 km/h73%96%0
Sat 8pDrizzle42°6° (likely 40°4° to 47°8°)42°6°30%, 0.02 in0.5 mm2 mph3 km/h from ESE, gusts 7 mph11 km/h79%94%0
Sat 9pDrizzle42°6° (likely 40°4° to 46°8°)42°6°20%, 0.02 in0.5 mm2 mph3 km/h from SE, gusts 7 mph11 km/h79%93%0
Sat 10pCloudy41°5° (likely 40°4° to 45°7°)41°5°20%, 0.02 in0.5 mm2 mph3 km/h from SE, gusts 7 mph12 km/h86%93%0
Sat 11pCloudy41°5° (likely 39°4° to 44°7°)41°5°20%, 0.02 in0.5 mm2 mph3 km/h from SE, gusts 7 mph11 km/h86%92%0
Sun 12aCloudy39°4° (likely 39°4° to 44°7°)39°4°10%2 mph3 km/h from SSE, gusts 7 mph11 km/h92%91%0
Sun 1aCloudy39°4° (likely 39°4° to 43°6°)39°4°10%2 mph3 km/h from SSE, gusts 5 mph8 km/h92%92%0
Sun 2aCloudy38°3° (likely 38°3° to 42°6°)38°3°10%2 mph3 km/h from SE, gusts 6 mph9 km/h96%93%0
Sun 3aCloudy38°3° (likely 38°3° to 42°6°)38°3°5%2 mph3 km/h from SE, gusts 6 mph10 km/h96%92%0
Sun 4aCloudy37°3° (likely 37°3° to 42°6°)37°3°5%2 mph3 km/h from SE, gusts 5 mph8 km/h100%89%0
Sun 5aCloudy36°2° (likely 36°2° to 42°6°)36°2°5%2 mph3 km/h from SE, gusts 7 mph11 km/h100%84%0
Sun 6aMostly cloudy36°2° (likely 36°2° to 42°6°)36°2°5%2 mph3 km/h from SE, gusts 5 mph8 km/h100%80%0
Sun 7aCloudy36°2° (likely 36°2° to 42°6°)36°2°5%2 mph3 km/h from SE, gusts 5 mph8 km/h100%79%0
Sun 8aFog37°3° (likely 37°3° to 42°6°)37°3°5%2 mph3 km/h from SE, gusts 4 mph7 km/h100%78%0
Sun 9aCloudy40°4° (likely 39°4° to 43°6°)38°3°5%3 mph5 km/h from ENE, gusts 3 mph6 km/h100%78%1
Sun 10aMostly cloudy45°7° (likely 41°5° to 45°7°)44°7°5%3 mph5 km/h from ENE, gusts 4 mph6 km/h86%79%2
Sun 11aMostly cloudy47°8° (likely 43°6° to 48°9°)46°8°5%3 mph5 km/h from E, gusts 5 mph9 km/h83%82%3
Sun 12pCloudy48°9° (likely 44°7° to 49°9°)47°8°20%, 0.01 in0.3 mm3 mph5 km/h from E, gusts 5 mph9 km/h80%81%4
Sun 1pCloudy50°10° (likely 46°8° to 52°11°)49°9°20%, 0.01 in0.3 mm3 mph5 km/h from E, gusts 5 mph8 km/h74%78%5
Sun 2pMostly sunny50°10° (likely 48°9° to 54°12°)49°9°20%, 0.01 in0.3 mm3 mph5 km/h from ENE, gusts 7 mph11 km/h74%41%5
Sun 3pShowers51°11° (likely 49°9° to 55°13°)51°11°30%, 0.01 in0.3 mm3 mph5 km/h from ENE, gusts 6 mph10 km/h68%61%4
Sun 4pCloudy51°11° (likely 49°9° to 55°13°)51°11°30%, 0.01 in0.3 mm5 mph8 km/h from NE, gusts 7 mph11 km/h68%68%3
Sun 5pCloudy50°10° (likely 48°9° to 54°12°)48°9°30%, 0.01 in0.3 mm5 mph8 km/h from NE, gusts 9 mph14 km/h71%94%1
Sun 6pCloudy47°8° (likely 46°8° to 50°10°)45°7°70%, 0.04 in1 mm5 mph8 km/h from NNE, gusts 11 mph18 km/h83%99%0
Sun 7pShowers44°7° (likely 44°7° to 49°9°)42°6°70%, 0.04 in1 mm3 mph5 km/h from NNE, gusts 10 mph15 km/h89%99%0
Sun 8pShowers42°6° (likely 42°6° to 48°9°)40°4°70%, 0.04 in1 mm3 mph5 km/h from NNE, gusts 10 mph16 km/h100%99%0
Sun 9pDrizzle42°6° (likely 42°6° to 48°9°)40°4°70%, 0.04 in1 mm3 mph5 km/h from N, gusts 9 mph15 km/h100%99%0
Sun 10pShowers41°5° (likely 41°5° to 47°8°)39°4°70%, 0.04 in1 mm3 mph5 km/h from N, gusts 9 mph15 km/h100%99%0
Sun 11pShowers41°5° (likely 41°5° to 48°9°)41°5°70%, 0.04 in1 mm2 mph3 km/h from N, gusts 8 mph13 km/h100%99%0
Mon 12aCloudy41°5° (likely 41°5° to 48°9°)41°5°70%, 0.03 in0.8 mm1 mph2 km/h from NNE, gusts 7 mph11 km/h100%99%0
Mon 1aShowers41°5° (likely 41°5° to 49°9°)41°5°70%, 0.03 in0.8 mm1 mph2 km/h from NNE, gusts 5 mph7 km/h100%81%0
Mon 2aShowers41°5° (likely 41°5° to 47°8°)41°5°70%, 0.03 in0.8 mm0 mph0 km/h, gusts 3 mph5 km/h100%76%0
Mon 3aShowers41°5° (likely 39°4° to 46°8°)41°5°70%, 0.03 in0.8 mm0 mph0 km/h, gusts 4 mph7 km/h100%83%0
Mon 4aShowers40°4° (likely 38°3° to 46°8°)40°4°70%, 0.03 in0.8 mm0 mph0 km/h, gusts 4 mph7 km/h100%88%0

Days ahead

Shaded: typical range for these dates (1991–2020)
  1. Today, Oct 24. Mostly cloudy. High 53°12°, low 45°7°. Typical 62°17° / 30°−1°. Rain 0.04 in1 mm, 30% chance. Forecasts differ.
    1. Morning

      6 AM–noon

      Mostly cloudy, 46°8°

      Dry

    2. Afternoon

      noon–6 PM

      Cloudy, 52°11°

      30% chance · 0.06 in1.5 mm

    3. Evening

      6 PM–midnight

      Drizzle, 42°6°

      30% chance · 0.12 in3 mm

    4. Overnight

      midnight–6 AM

      Cloudy, 36°2°

      Dry

    Official NWS forecast

    Today: A chance of rain showers after noon. Mostly cloudy. High near 53, with temperatures falling to around 50 in the afternoon. East wind 5 to 8 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.

    Tonight: Mostly cloudy. Low around 45, with temperatures rising to around 47 overnight. North northwest wind around 3 mph.

    Forecasts differIndependent forecasts disagree; expect changes and plan for the range.

    High, likely
    51°11°–61°16°
    Low, likely
    38°3°–45°7°
    Typical high / low
    62°17° / 30°−1°
    Wind
    10 mph16 km/h, gusts 17 mph28 km/h
    UV peak
    4
  2. Tomorrow, Oct 25. Drizzle. High 51°11°, low 39°4°. Typical 62°17° / 30°−1°. Rain 0.11 in2.8 mm, 30% chance. Forecasts differ.
    1. Morning

      6 AM–noon

      Cloudy, 37°3°

      Dry

    2. Afternoon

      noon–6 PM

      Showers, 51°11°

      30% chance · 0.06 in1.5 mm

    3. Evening

      6 PM–midnight

      Showers, 42°6°

      70% chance · 0.24 in6.1 mm

    4. Overnight

      midnight–6 AM

      Showers, 40°4°

      70% chance · 0.16 in4.1 mm

    Official NWS forecast

    Day: A chance of rain showers after noon. Partly sunny, with a high near 51. East northeast wind around 5 mph. Chance of precipitation is 30%.

    Night: Rain showers likely. Cloudy, with a low around 39. North northeast wind 0 to 5 mph. Chance of precipitation is 70%.

    Forecasts differIndependent forecasts disagree; expect changes and plan for the range.

    High, likely
    49°9°–55°13°
    Low, likely
    36°2°–42°6°
    Typical high / low
    62°17° / 30°−1°
    Wind
    9 mph14 km/h, gusts 17 mph27 km/h
    UV peak
    5
  3. Monday, Oct 26. Drizzle. High 57°14°, low 35°2°. Typical 62°17° / 30°−1°. Rain 0.08 in2 mm, 30% chance. Forecasts differ.
    1. Morning

      6 AM–noon

      Drizzle, 44°7°

      50% chance · 0.02 in0.5 mm

    2. Afternoon

      noon–6 PM

      Sunny, 56°14°

      Dry

    3. Evening

      6 PM–midnight

      Cloudy, 46°8°

      Dry

    4. Overnight

      midnight–6 AM

      Clear, 38°3°

      Dry

    Hours this far out come from computer models only.

    Official NWS forecast

    Day: A chance of rain showers before noon. Partly sunny, with a high near 57. Chance of precipitation is 30%.

    Night: Mostly clear, with a low around 35.

    Forecasts differIndependent forecasts disagree; expect changes and plan for the range.

    High, likely
    51°11°–59°15°
    Low, likely
    35°2°–44°7°
    Typical high / low
    62°17° / 30°−1°
    Wind
    12 mph20 km/h, gusts 18 mph28 km/h
    UV peak
    5
  4. Tuesday, Oct 27. Mostly sunny. High 64°18°, low 37°3°. Typical 61°16° / 29°−2°. Dry. Forecasts differ.
    1. Morning

      6 AM–noon

      Sunny, 42°6°

      Dry

    2. Afternoon

      noon–6 PM

      Sunny, 65°18°

      Dry

    3. Evening

      6 PM–midnight

      Clear, 52°11°

      Dry

    4. Overnight

      midnight–6 AM

      Clear, 39°4°

      Dry

    Hours this far out come from computer models only.

    Official NWS forecast

    Day: Sunny, with a high near 64.

    Night: Mostly clear, with a low around 37.

    Forecasts differIndependent forecasts disagree; expect changes and plan for the range.

    High, likely
    60°16°–68°20°
    Low, likely
    33°1°–40°4°
    Typical high / low
    61°16° / 29°−2°
    Wind
    20 mph32 km/h, gusts 37 mph60 km/h
    UV peak
    5
  5. Wednesday, Oct 28. Mostly sunny. High 64°18°, low 37°3°. Typical 61°16° / 29°−2°. Dry. Mostly agree.
    1. Morning

      6 AM–noon

      Sunny, 43°6°

      Dry

    2. Afternoon

      noon–6 PM

      Sunny, 61°16°

      Dry

    3. Evening

      6 PM–midnight

      Partly cloudy, 49°9°

      Dry

    4. Overnight

      midnight–6 AM

      Cloudy, 41°5°

      Dry

    Hours this far out come from computer models only.

    Official NWS forecast

    Day: Sunny, with a high near 64.

    Night: Partly cloudy, with a low around 37.

    Mostly agreeIndependent forecasts are fairly close; small surprises are possible.

    High, likely
    59°15°–64°18°
    Low, likely
    35°2°–42°6°
    Typical high / low
    61°16° / 29°−2°
    Wind
    9 mph14 km/h, gusts 26 mph41 km/h
    UV peak
    4
  6. Thursday, Oct 29. Partly sunny. High 64°18°, low 40°4°. Typical 60°16° / 29°−2°. Dry. Forecasts agree.
    1. Morning

      6 AM–noon

      Cloudy, 45°7°

      Dry

    2. Afternoon

      noon–6 PM

      Cloudy, 63°17°

      Dry

    3. Evening

      6 PM–midnight

      Partly cloudy, 50°10°

      Dry

    4. Overnight

      midnight–6 AM

      Cloudy, 44°7°

      Dry

    Hours this far out come from computer models only.

    Official NWS forecast

    Day: Mostly sunny, with a high near 64.

    Night: Partly cloudy, with a low around 40.

    Forecasts agreeIndependent forecasts are close; the range is narrow.

    High, likely
    61°16°–64°18°
    Low, likely
    36°2°–45°7°
    Typical high / low
    60°16° / 29°−2°
    Wind
    9 mph14 km/h, gusts 14 mph22 km/h
    UV peak
    4
  7. Friday, Oct 30. Cloudy. High 64°18°, low 43°6°. Typical 60°16° / 28°−2°. Dry. Forecasts differ.
    1. Morning

      6 AM–noon

      Cloudy, 49°10°

      Dry

    2. Afternoon

      noon–6 PM

      Partly sunny, 65°18°

      Dry

    3. Evening

      6 PM–midnight

      Cloudy, 52°11°

      Dry

    4. Overnight

      midnight–6 AM

      Cloudy, 45°7°

      Dry

    Hours this far out come from computer models only.

    Official NWS forecast

    Day: Partly sunny, with a high near 64.

    Forecasts differIndependent forecasts disagree; expect changes and plan for the range.

    High, likely
    61°16°–67°19°
    Low, likely
    39°4°–47°8°
    Typical high / low
    60°16° / 28°−2°
    Wind
    8 mph12 km/h, gusts 20 mph32 km/h
    UV peak
    4
  8. Saturday, Oct 31. Drizzle. High 61°16°, low 40°4°. Typical 60°16° / 28°−2°. Rain 0.06 in1.5 mm, 20% chance. Forecasts differ.
    1. Morning

      6 AM–noon

      Mostly sunny, 49°9°

      Dry

    2. Afternoon

      noon–6 PM

      Partly sunny, 63°17°

      Dry

    3. Evening

      6 PM–midnight

      Drizzle, 46°8°

      20% chance · 0.03 in0.9 mm

    4. Overnight

      midnight–6 AM

      Mostly clear, 38°3°

      Dry

    Hours this far out come from computer models only.

    The National Weather Service writes about seven days ahead; this day is our model forecast only.

    Forecasts differIndependent forecasts disagree; expect changes and plan for the range.

    High, likely
    53°12°–68°20°
    Low, likely
    37°3°–46°8°
    Typical high / low
    60°16° / 28°−2°
    Wind
    8 mph13 km/h, gusts 14 mph23 km/h
    UV peak
    4
  9. Sunday, Nov 1. Drizzle. High 52°11°, low 36°2°. Typical 59°15° / 28°−2°. Rain 0.14 in3.6 mm, 30% chance. Forecasts differ.
    1. Morning

      6 AM–noon

      Cloudy, 43°6°

      Dry

    2. Afternoon

      noon–6 PM

      Drizzle, 53°12°

      20% chance · 0.2 in0.4 cm

    3. Evening

      6 PM–midnight

      Drizzle, 44°6°

      30% chance · 0.02 in0.6 mm

    4. Overnight

      midnight–6 AM

      Drizzle, 38°3°

      30% chance · 0.02 in0.5 mm

    Hours this far out come from computer models only.

    The National Weather Service writes about seven days ahead; this day is our model forecast only.

    Forecasts differIndependent forecasts disagree; expect changes and plan for the range.

    High, likely
    39°4°–63°17°
    Low, likely
    29°−2°–45°7°
    Typical high / low
    59°15° / 28°−2°
    Wind
    13 mph21 km/h
    UV peak
    4
  10. Monday, Nov 2. Drizzle. High 51°11°, low 38°3°. Typical 59°15° / 28°−2°. Rain 0.08 in2 mm, 30% chance. Mostly agree.
    1. Morning

      6 AM–noon

      Fog, 40°5°

      20% chance

    2. Afternoon

      noon–6 PM

      Sunny, 52°11°

      20% chance

    3. Evening

      6 PM–midnight

      Clear, 42°6°

      20% chance

    Hours this far out come from computer models only.

    The National Weather Service writes about seven days ahead; this day is our model forecast only.

    Mostly agreeIndependent forecasts are fairly close; small surprises are possible.

    High, likely
    48°9°–55°13°
    Low, likely
    34°1°–44°7°
    Typical high / low
    59°15° / 28°−2°
    Wind
    7 mph12 km/h, gusts 26 mph41 km/h
    UV peak
    4

The outlook

  1. Today

    Dry, high 53°, low 45°.

  2. Tomorrow

    Dry, high 51°, low 39°.

  3. Monday

    Dry, high 57°, low 35°, warming up.

  4. Rest of week

    Mostly dry, highs 51–64°.

Want the meteorologists’ reasoning? Read the NWS forecast discussion (BOU) (opens in a new tab)

What changed since yesterday

No meaningful changes from yesterday’s forecast.

Radar

Radar data: NOAA MRMS, rendered by forecast.blue
Radar loads when scrolled into view

Full-screen radar

Rivers

NOAA river gauges within 25 mi

Saint Vrain Creek at Lyons

0.6 mi
Below flood stage
Level
2.8 ft

Reading from Sat 3:15 AM · NWS gauge page

Saint Vrain Creek at Hygiene

5.7 mi
Below flood stage
Level
0.0 ft

Reading from Sat 3:45 AM · NWS gauge page

Boulder Creek (CO) at North 75TH St.

13 mi
Below flood stage
Level
4.2 ft
Flow
2 cfs

Reading from Sat 4:15 AM · NWS gauge page

Big Thompson River (CO) at Cedar Cove

13 mi
Below flood stage
Level
4.6 ft
Flow
253 cfs

Reading from Sat 4:15 AM · NWS gauge page

For your home

What this week’s weather means for heating, cooling, pipes and fresh air.

Heating this week

About 71% less heating than a typical week.

This week 41Typical 139

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F
32
h below 17°F
0
h below 5°F
0

47, 17 and 5°F are the test points heat pumps are rated at. About 21 hours are near freezing and damp, when outdoor units defrost more often.

Comfort

Dry air outside (dew point 36°F).

Open the windows?

No stretch in the next few days is comfortable enough outside, by temperature, dew point and air quality.

Is this typical?

LONGMONT 2 ESE · official normals 1991–2020 · records 1893–2026

Oct 24, today vs a typical year

Today’s expected high is 9°5° colder than typical.

Normal high / low
62°17° / 30°−1°
Forecast high / low
53°12° / 45°7°
Record high
84°29° in 2003
Record low
8°−13° in 1942

Last 7 days vs normal

On average 9°5° warmer than normal (daily mean temperature).

  1. +5°+3°SunOct 18
  2. +9°+5°MonOct 19
  3. +6°+3°TueOct 20
  4. +9°+5°WedOct 21
  5. +13°+7°ThuOct 22
  6. +13°+7°FriOct 23
  7. —SatOct 24

Lyons weather by month: normals, records, snow and freeze dates

Sun & moon

Sun

Sunrise 7:21 AM, sunset 6:08 PM.

Daylight
10 h 47 min
Losing 2 min 25 s a day; shortest Dec 21, 1 h 28 min less
Golden hour
5:30–6:25 PM
Morning 7:04–7:59 AM
Blue hour
6:25–6:35 PM
Morning 6:53–7:04 AM; first light 6:53 AM

Stars tonight? Poor

Clouds most of the night (about 54% cover).

Moon

Waxing gibbous

96% lit · growing

Today
sets 5:38 AM · rises 5:07 PM
Full moon
Oct 25
New moon
Nov 9
Looking west from Lyons. The highest point on the skyline is about 12,900 ft, 22 mi away.Skyline from USGS elevation data, heights drawn up to 2.5× taller. Sky, sun and moon as they are now.

UniColorado Heating & Cooling, a Denver HVAC installer

UniColorado Heating & Cooling installs heat pumps, furnaces and air conditioning across the Front Range. 12,000+ heat pumps installed since 2014.