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Observed 5:10 PM MDT at KBJC

Louisville, CO weather

Overcast and 46°8°, 10°6° colder than a typical Oct 24, rain ~6–8 PM (61%).

Today: low 39°4° (likely 39°4° to 46°8°), high 52°11° (likely 52°11° to 60°16°).

Forecasts differ

Now 46°8°

Cloudy

Wind
5 mph8 km/h
From the west-southwest. Up to 6 mph10 km/h through 5 AM
Dew point
34°1°
Dry, static shocks likely
UV tomorrow
5Moderate
Moderate 11 AM–5 PM · peak 5
Air quality
39Good
Main pollutant: PM2.5 (fine particles)
Pressure
30.34 inHg1027 hPa
Steady over the last 3 h

Next 2 hours

No precipitation expected in the next 2 hours.

Next 48 hours

31°17° cooler than this time yesterday (77°25° then, 46°8° now)

Good hours for
  • Dry until 6 PM
  • Rain tonight 6 PM–midnight (60%, 0.12 in3 mm)
  • Above 50°10° tomorrow by 1 PM
  • High 54°12° tomorrow at 3 PM
  • Rain tomorrow night 6 PM–6 AM (70%, 0.6 in15 mm)
  1. TonightDown to 41°5° by 4 AM · Rain 6 PM–midnight (60%)
  2. Tomorrow morningUp to 47°8° by 11 AM · Mostly cloudy
  3. Tomorrow afternoonUp to 54°12° by 3 PM · rain chance 20% · Partly cloudy
  4. Tomorrow nightDown to 44°7° by 5 AM · Rain all night (70%)
  5. Monday morningUp to 51°11° by 11 AM · rain chance 20% · Cloudy
  6. Monday afternoonUp to 60°16° by 3 PM · Clear
Hourly forecast, next 48 hours, in the place's local time
HourConditionsTemperatureFeels likePrecipitationWindHumidityCloud coverUV index
Sat 5pCloudy50°10° (likely 50°10° to 52°11°)48°9°30%6 mph10 km/h from ENE, gusts 9 mph14 km/h56%92%0
Sat 6pCloudy49°9° (likely 48°9° to 51°11°)47°8°60%, 0.02 in0.5 mm6 mph10 km/h from E, gusts 8 mph14 km/h61%98%0
Sat 7pCloudy47°8° (likely 47°8° to 49°9°)46°8°60%, 0.02 in0.5 mm3 mph5 km/h from E, gusts 8 mph14 km/h68%94%0
Sat 8pCloudy46°8° (likely 45°7° to 48°9°)45°7°60%, 0.02 in0.5 mm3 mph5 km/h from E, gusts 8 mph13 km/h71%97%0
Sat 9pCloudy45°7° (likely 44°7° to 46°8°)44°7°20%, 0.02 in0.5 mm3 mph5 km/h from E, gusts 9 mph14 km/h73%98%0
Sat 10pCloudy46°8° (likely 43°6° to 46°8°)46°8°20%, 0.02 in0.5 mm2 mph3 km/h from E, gusts 9 mph14 km/h71%95%0
Sat 11pCloudy45°7° (likely 42°6° to 46°8°)45°7°20%, 0.02 in0.5 mm2 mph3 km/h from ESE, gusts 9 mph15 km/h73%90%0
Sun 12aCloudy44°7° (likely 42°6° to 45°7°)44°7°5%2 mph3 km/h from ESE, gusts 10 mph16 km/h76%84%0
Sun 1aCloudy43°6° (likely 40°4° to 44°7°)43°6°5%2 mph3 km/h from SE, gusts 9 mph14 km/h82%81%0
Sun 2aCloudy43°6° (likely 40°4° to 43°6°)43°6°5%2 mph3 km/h from SE, gusts 8 mph13 km/h82%90%0
Sun 3aCloudy42°6° (likely 39°4° to 42°6°)42°6°5%2 mph3 km/h from SE, gusts 4 mph6 km/h86%81%0
Sun 4aCloudy41°5° (likely 38°3° to 42°6°)41°5°5%2 mph3 km/h from ESE, gusts 2 mph3 km/h89%80%0
Sun 5aCloudy41°5° (likely 37°3° to 41°5°)41°5°5%2 mph3 km/h from E, gusts 6 mph9 km/h89%85%0
Sun 6aCloudy40°4° (likely 37°3° to 41°5°)40°4°0%2 mph3 km/h from E, gusts 8 mph12 km/h89%83%0
Sun 7aCloudy39°4° (likely 37°3° to 41°5°)39°4°0%2 mph3 km/h from NE, gusts 6 mph10 km/h92%68%0
Sun 8aCloudy39°4° (likely 37°3° to 41°5°)37°3°0%3 mph5 km/h from N, gusts 6 mph10 km/h96%67%0
Sun 9aCloudy41°5° (likely 38°3° to 43°6°)39°4°5%3 mph5 km/h from N, gusts 7 mph11 km/h96%76%1
Sun 10aCloudy45°7° (likely 41°5° to 45°7°)44°7°5%3 mph5 km/h from NNE, gusts 7 mph11 km/h82%76%2
Sun 11aSunny47°8° (likely 43°6° to 49°9°)46°8°5%3 mph5 km/h from NNE, gusts 6 mph10 km/h79%42%3
Sun 12pSunny48°9° (likely 47°8° to 52°11°)47°8°10%3 mph5 km/h from NNE, gusts 8 mph12 km/h77%20%4
Sun 1pSunny52°11° (likely 50°10° to 54°12°)52°11°10%5 mph8 km/h from NNE, gusts 8 mph12 km/h66%16%5
Sun 2pSunny53°12° (likely 52°11° to 56°13°)53°12°10%6 mph10 km/h from NNE, gusts 8 mph13 km/h64%15%5
Sun 3pPartly sunny54°12° (likely 53°12° to 57°14°)54°12°20%6 mph10 km/h from NNE, gusts 9 mph15 km/h61%51%4
Sun 4pCloudy54°12° (likely 53°12° to 57°14°)54°12°20%6 mph10 km/h from N, gusts 10 mph16 km/h61%77%3
Sun 5pShowers53°12° (likely 53°12° to 56°13°)53°12°20%7 mph11 km/h from N, gusts 11 mph18 km/h64%67%1
Sun 6pCloudy52°11° (likely 50°10° to 55°13°)52°11°70%, 0.05 in1.3 mm7 mph11 km/h from N, gusts 10 mph17 km/h69%77%0
Sun 7pDrizzle50°10° (likely 48°9° to 53°12°)47°8°70%, 0.05 in1.3 mm7 mph11 km/h from N, gusts 11 mph17 km/h77%84%0
Sun 8pCloudy48°9° (likely 46°8° to 51°11°)45°7°70%, 0.05 in1.3 mm6 mph10 km/h from N, gusts 12 mph20 km/h83%86%0
Sun 9pShowers48°9° (likely 44°7° to 50°10°)45°7°70%, 0.05 in1.3 mm6 mph10 km/h from NNW, gusts 15 mph24 km/h83%86%0
Sun 10pCloudy47°8° (likely 44°7° to 49°9°)44°7°70%, 0.05 in1.3 mm6 mph10 km/h from N, gusts 18 mph28 km/h86%96%0
Sun 11pCloudy46°8° (likely 45°7° to 48°9°)44°7°70%, 0.05 in1.3 mm5 mph8 km/h from N, gusts 15 mph24 km/h89%99%0
Mon 12aRain47°8° (likely 44°7° to 47°8°)46°8°50%, 0.05 in1.3 mm3 mph5 km/h from N, gusts 15 mph25 km/h86%100%0
Mon 1aDrizzle46°8° (likely 44°7° to 47°8°)45°7°50%, 0.05 in1.3 mm3 mph5 km/h from N, gusts 17 mph27 km/h89%100%0
Mon 2aDrizzle46°8° (likely 44°7° to 46°8°)45°7°50%, 0.05 in1.3 mm3 mph5 km/h from N, gusts 18 mph29 km/h86%99%0
Mon 3aDrizzle45°7° (likely 43°6° to 46°8°)44°7°50%, 0.05 in1.3 mm3 mph5 km/h from N, gusts 17 mph27 km/h89%100%0
Mon 4aShowers45°7° (likely 43°6° to 45°7°)45°7°50%, 0.05 in1.3 mm2 mph3 km/h from N, gusts 16 mph25 km/h89%99%0
Mon 5aDrizzle44°7° (likely 42°6° to 45°7°)44°7°50%, 0.05 in1.3 mm2 mph3 km/h from N, gusts 15 mph25 km/h93%100%0
Mon 6aShowers44°7° (likely 41°5° to 44°7°)44°7°20%, 0.01 in0.3 mm2 mph3 km/h from N, gusts 17 mph27 km/h89%100%0
Mon 7aDrizzle42°6° (likely 41°5° to 44°7°)42°6°20%, 0.01 in0.3 mm2 mph3 km/h from NNW, gusts 15 mph25 km/h96%98%0
Mon 8aCloudy43°6° (likely 40°4° to 44°7°)41°5°20%, 0.01 in0.3 mm3 mph5 km/h from N, gusts 12 mph19 km/h96%96%0
Mon 9aCloudy44°7° (likely 41°5° to 45°7°)42°6°20%, 0.01 in0.3 mm3 mph5 km/h from NE, gusts 9 mph14 km/h96%97%0
Mon 10aCloudy47°8° (likely 42°6° to 47°8°)46°8°20%, 0.01 in0.3 mm3 mph5 km/h from ENE, gusts 5 mph8 km/h86%94%1
Mon 11aCloudy51°11° (likely 43°6° to 51°11°)51°11°20%, 0.01 in0.3 mm5 mph8 km/h from SE, gusts 5 mph8 km/h74%89%2
Mon 12pMostly sunny54°12° (likely 46°8° to 54°12°)54°12°0%6 mph10 km/h from SSE, gusts 5 mph9 km/h64%56%3
Mon 1pMostly sunny57°14° (likely 52°11° to 57°14°)57°14°0%6 mph10 km/h from SSE, gusts 8 mph12 km/h55%25%4
Mon 2pMostly sunny59°15° (likely 53°12° to 59°15°)59°15°0%6 mph10 km/h from SE, gusts 8 mph13 km/h51%7%5
Mon 3pMostly sunny60°16° (likely 55°13° to 60°16°)60°16°0%6 mph10 km/h from SE, gusts 8 mph13 km/h47%7%4
Mon 4pMostly sunny60°16° (likely 55°13° to 60°16°)60°16°0%5 mph8 km/h from E, gusts 8 mph13 km/h47%9%3

Days ahead

Shaded: typical range for these dates (1991–2020)
  1. Today, Oct 24. Cloudy. High 52°11°, low 39°4°. Typical 62°17° / 30°−1°. Rain 0.01 in0.3 mm, 30% chance. Forecasts differ.
    1. Evening

      6 PM–midnight

      Cloudy, 46°8°

      60% chance · 0.12 in3 mm

    2. Overnight

      midnight–6 AM

      Cloudy, 41°5°

      Dry

    Official NWS forecast

    Today: A chance of rain showers. Cloudy. High near 52, with temperatures falling to around 50 in the afternoon. East northeast wind around 6 mph. Chance of precipitation is 30%.

    Tonight: Rain showers likely before midnight. Cloudy. Low around 39, with temperatures rising to around 41 overnight. East southeast wind 2 to 6 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.

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

    High, likely
    52°11°–60°16°
    Low, likely
    39°4°–46°8°
    Typical high / low
    62°17° / 30°−1°
    Wind
    12 mph19 km/h, gusts 20 mph31 km/h
    UV peak
    5
  2. Tomorrow, Oct 25. Drizzle. High 55°13°, low 42°6°. Typical 62°17° / 30°−1°. Rain 0.05 in1.3 mm, 20% chance. Mostly agree.
    1. Morning

      6 AM–noon

      Cloudy, 39°4°

      Dry

    2. Afternoon

      noon–6 PM

      Partly sunny, 54°12°

      Dry

    3. Evening

      6 PM–midnight

      Showers, 48°9°

      70% chance · 0.3 in7.6 mm

    4. Overnight

      midnight–6 AM

      Rain, 44°7°

      50% chance · 0.3 in7.6 mm

    Official NWS forecast

    Day: A slight chance of rain showers after 3pm. Mostly cloudy. High near 55, with temperatures falling to around 53 in the afternoon. North northeast wind 2 to 7 mph. Chance of precipitation is 20%.

    Night: Showers and thunderstorms likely. Mostly cloudy, with a low around 42. North wind 2 to 7 mph. Chance of precipitation is 70%.

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

    High, likely
    54°12°–57°14°
    Low, likely
    36°2°–42°6°
    Typical high / low
    62°17° / 30°−1°
    Wind
    15 mph23 km/h, gusts 23 mph37 km/h
    UV peak
    5
  3. Monday, Oct 26. Partly sunny. High 60°16°, low 36°2°. Typical 62°17° / 30°−1°. Dry. Mostly agree.
    1. Morning

      6 AM–noon

      Cloudy, 43°6°

      Dry

    2. Afternoon

      noon–6 PM

      Mostly sunny, 60°16°

      Dry

    3. Evening

      6 PM–midnight

      Clear, 47°9°

      Dry

    4. Overnight

      midnight–6 AM

      Clear, 36°2°

      Dry

    Official NWS forecast

    Day: A slight chance of rain showers before noon. Mostly sunny, with a high near 60. East wind 2 to 6 mph. Chance of precipitation is 20%.

    Night: Mostly clear, with a low around 36.

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

    High, likely
    56°13°–60°16°
    Low, likely
    36°2°–42°6°
    Typical high / low
    62°17° / 30°−1°
    Wind
    12 mph20 km/h, gusts 25 mph40 km/h
    UV peak
    5
  4. Tuesday, Oct 27. Mostly sunny. High 67°19°, low 38°3°. Typical 61°16° / 29°−2°. Dry. Forecasts agree.
    1. Morning

      6 AM–noon

      Mostly sunny, 37°3°

      Dry

    2. Afternoon

      noon–6 PM

      Sunny, 65°18°

      Dry

    3. Evening

      6 PM–midnight

      Clear, 49°10°

      Dry

    4. Overnight

      midnight–6 AM

      Mostly clear, 40°4°

      Dry

    Hours this far out come from computer models only.

    Official NWS forecast

    Day: Sunny, with a high near 67.

    Night: Mostly clear, with a low around 38.

    Forecasts agreeIndependent forecasts are close; the range is narrow.

    High, likely
    65°18°–67°19°
    Low, likely
    29°−2°–40°4°
    Typical high / low
    61°16° / 29°−2°
    Wind
    11 mph18 km/h, gusts 20 mph32 km/h
    UV peak
    4
  5. Wednesday, Oct 28. Mostly sunny. High 66°19°, low 39°4°. Typical 61°16° / 29°−2°. Dry. Mostly agree.
    1. Morning

      6 AM–noon

      Cloudy, 43°6°

      Dry

    2. Afternoon

      noon–6 PM

      Cloudy, 64°18°

      Dry

    3. Evening

      6 PM–midnight

      Clear, 51°10°

      Dry

    4. Overnight

      midnight–6 AM

      Cloudy, 42°5°

      Dry

    Hours this far out come from computer models only.

    Official NWS forecast

    Day: Sunny, with a high near 66.

    Night: Partly cloudy, with a low around 39.

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

    High, likely
    61°16°–66°19°
    Low, likely
    36°2°–43°6°
    Typical high / low
    61°16° / 29°−2°
    Wind
    9 mph14 km/h, gusts 32 mph51 km/h
    UV peak
    4
  6. Thursday, Oct 29. Cloudy. High 67°19°, low 42°6°. Typical 60°16° / 29°−2°. Dry. Forecasts agree.
    1. Morning

      6 AM–noon

      Sunny, 44°7°

      Dry

    2. Afternoon

      noon–6 PM

      Mostly sunny, 65°18°

      Dry

    3. Evening

      6 PM–midnight

      Cloudy, 53°12°

      Dry

    4. Overnight

      midnight–6 AM

      Cloudy, 43°6°

      Dry

    Hours this far out come from computer models only.

    Official NWS forecast

    Day: Mostly sunny, with a high near 67.

    Night: Mostly cloudy, with a low around 42.

    Forecasts agreeIndependent forecasts are close; the range is narrow.

    High, likely
    64°18°–67°19°
    Low, likely
    38°3°–45°7°
    Typical high / low
    60°16° / 29°−2°
    Wind
    8 mph12 km/h, gusts 15 mph25 km/h
    UV peak
    4
  7. Friday, Oct 30. Mostly cloudy. High 67°19°, low 43°6°. Typical 60°16° / 28°−2°. Dry. Forecasts agree.
    1. Morning

      6 AM–noon

      Cloudy, 48°9°

      Dry

    2. Afternoon

      noon–6 PM

      Cloudy, 66°19°

      Dry

    3. Evening

      6 PM–midnight

      Cloudy, 54°12°

      Dry

    4. Overnight

      midnight–6 AM

      Cloudy, 47°8°

      Dry

    Hours this far out come from computer models only.

    Official NWS forecast

    Day: Partly sunny, with a high near 67.

    Night: Mostly cloudy, with a low around 43.

    Forecasts agreeIndependent forecasts are close; the range is narrow.

    High, likely
    66°19°–67°19°
    Low, likely
    39°4°–47°8°
    Typical high / low
    60°16° / 28°−2°
    Wind
    8 mph13 km/h, gusts 18 mph29 km/h
    UV peak
    3
  8. Saturday, Oct 31. Cloudy. High 60°16°, low 44°7°. Typical 60°16° / 28°−2°. Rain 0.02 in0.5 mm, 30% chance. Forecasts differ.
    1. Morning

      6 AM–noon

      Cloudy, 47°8°

      Dry

    2. Afternoon

      noon–6 PM

      Cloudy, 62°17°

      20% chance

    3. Evening

      6 PM–midnight

      Partly cloudy, 51°10°

      30% chance

    4. Overnight

      midnight–6 AM

      Cloudy, 43°6°

      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
    54°12°–65°18°
    Low, likely
    39°4°–51°11°
    Typical high / low
    60°16° / 28°−2°
    Wind
    8 mph12 km/h, gusts 18 mph28 km/h
    UV peak
    4
  9. Sunday, Nov 1. Drizzle. High 56°13°, low 42°6°. Typical 59°15° / 28°−2°. Rain 0.06 in1.5 mm, 30% chance. Forecasts differ.
    1. Morning

      6 AM–noon

      Partly sunny, 45°7°

      Dry

    2. Afternoon

      noon–6 PM

      Mostly sunny, 57°14°

      20% chance

    3. Evening

      6 PM–midnight

      Mostly clear, 50°10°

      30% chance

    4. Overnight

      midnight–6 AM

      Cloudy, 43°6°

      30% 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.

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

    High, likely
    51°11°–63°17°
    Low, likely
    38°3°–47°8°
    Typical high / low
    59°15° / 28°−2°
    Wind
    13 mph21 km/h, gusts 52 mph84 km/h
    UV peak
    4
  10. Monday, Nov 2. Drizzle. High 57°14°, low 39°4°. Typical 59°15° / 28°−2°. Rain 0.08 in2 mm, 30% chance. Forecasts differ.
    1. Morning

      6 AM–noon

      Drizzle, 47°8°

      20% chance

    2. Afternoon

      noon–6 PM

      Mostly sunny, 57°14°

      20% chance · 0.04 in1.1 mm

    3. Evening

      6 PM–midnight

      Drizzle, 45°7°

      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.

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

    High, likely
    50°10°–71°22°
    Low, likely
    38°3°–43°6°
    Typical high / low
    59°15° / 28°−2°
    Wind
    11 mph17 km/h, gusts 27 mph43 km/h
    UV peak
    1

The outlook

  1. Today

    Dry, high 52°, low 39°.

  2. Tomorrow

    Dry, high 55°, low 42°, warming up.

  3. Monday

    Dry, high 60°, low 36°, warming up.

  4. Rest of week

    Mostly dry, highs 56–67°.

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

Boulder Creek (CO) at North 75TH St.

6.0 mi
Below flood stage
Level
4.1 ft
Flow
under 1 cfs

Reading from Sat 3:15 PM · NWS gauge page

Boulder Creek (CO) below Broadway St

7.8 mi
Below flood stage
Level
1.3 ft
Flow
33 cfs

Reading from Sat 2:15 PM · NWS gauge page

South Boulder Creek (CO) above Eldorado Springs

8.9 mi
Below flood stage
Level
2.0 ft
Flow
8 cfs

Reading from Sat 3:15 PM · NWS gauge page

Coal Creek (CO) near Plainview

9.5 mi
Below flood stage
Level
0.3 ft
Flow
under 1 cfs

Reading from Sat 3:45 PM · NWS gauge page

For your home

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

Heating this week

About 75% less heating than a typical week.

This week 35Typical 139

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F
30
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 8 hours are near freezing and damp, when outdoor units defrost more often.

Comfort

Dry air outside (dew point 34°F).

Open the windows?

Mon, 3:00 PM–4:00 PM

Good stretch to open the windows.

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 10°6° colder than typical.

Normal high / low
62°17° / 30°−1°
Forecast high / low
52°11° / 39°4°
Record high
84°29° in 2003
Record low
8°−13° in 1942

Last 7 days vs normal

On average 10°6° 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. +16°+9°SatOct 24

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

Sun & moon

Sun

Sunrise 7:20 AM, sunset 6:08 PM.

Daylight
10 h 47 min
Losing 2 min 25 s a day; shortest Dec 21, 1 h 27 min less
Golden hour
5:30–6:25 PM
Morning 7:03–7:58 AM
Blue hour
6:25–6:35 PM
Morning 6:53–7:03 AM; first light 6:53 AM

Stars tonight? Poor

Clouds most of the night (about 89% cover).

Moon

Waxing gibbous

98% lit · growing

Today
sets 5:38 AM · rises 5:06 PM
Full moon
Oct 25
New moon
Nov 9
Looking west from Louisville. The highest point on the skyline is about 14,100 ft, 32 mi away.Skyline from USGS elevation data, heights drawn up to 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.