Observed 9:35 PM MDT at KLMO

Niwot, CO weather

Overcast and 45°7°.

Mostly agree

Now 45°7°

Cloudy

Wind: 5 mph8 km/h; From the east-southeast. Light through 10 AM
Dew point: 35°2°; Comfortable
UV tomorrow: 5Moderate; Moderate 11 AM–5 PM · peak 5
Air quality: 51Moderate; PM2.5 (fine particles) · tomorrow good
Pressure: 30.36 inHg1028 hPa; Falling slowly · −0.02 inHg−0.7 hPa in 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

12°6° cooler than this time yesterday (56°13° then, 44°7° now)

Good hours for

Dry until tomorrow 6 PM
Above 50°10° tomorrow by noon
High 55°13° tomorrow at 3 PM
Rain tomorrow night 6 PM–6 AM (70%, 0.66 in17 mm)
Below 50°10° tomorrow night after 8 PM

TonightDown to 40°4° by 5 AM · rain chance 20% · Cloudy
Tomorrow morningUp to 48°9° by 11 AM · Partly cloudy
Tomorrow afternoonUp to 55°13° by 3 PM · rain chance 20% · Partly cloudy
Tomorrow nightDown to 42°6° by 5 AM · Rain all night (70%)
Monday morningUp to 50°10° by 11 AM · rain chance 20% · Cloudy
Monday afternoonUp to 61°16° by 3 PM · Partly cloudy
Monday nightDown to 46°8° by 9 PM · Clear

Hourly forecast, next 48 hours, in the place's local time
Hour	Conditions	Temperature	Feels like	Precipitation	Wind	Humidity	Cloud cover	UV index
Sat 10p	Cloudy	46°8° (likely 43°6° to 46°8°)	46°8°	20%, 0.01 in0.3 mm	2 mph3 km/h from ESE, gusts 10 mph16 km/h	73%	83%	0
Sat 11p	Cloudy	45°7° (likely 42°6° to 45°7°)	45°7°	20%, 0.01 in0.3 mm	2 mph3 km/h from ESE, gusts 7 mph11 km/h	76%	85%	0
Sun 12a	Cloudy	44°7° (likely 41°5° to 45°7°)	44°7°	5%	2 mph3 km/h from SE, gusts 4 mph6 km/h	79%	91%	0
Sun 1a	Cloudy	43°6° (likely 40°4° to 44°7°)	43°6°	5%	2 mph3 km/h from SE, gusts 5 mph8 km/h	82%	88%	0
Sun 2a	Cloudy	42°6° (likely 40°4° to 42°6°)	42°6°	5%	2 mph3 km/h from SE, gusts 4 mph7 km/h	86%	93%	0
Sun 3a	Cloudy	41°5° (likely 39°4° to 42°6°)	41°5°	5%	2 mph3 km/h from ESE, gusts 6 mph9 km/h	93%	94%	0
Sun 4a	Cloudy	41°5° (likely 38°3° to 41°5°)	41°5°	5%	2 mph3 km/h from E, gusts 3 mph5 km/h	93%	81%	0
Sun 5a	Cloudy	40°4° (likely 38°3° to 40°4°)	40°4°	5%	2 mph3 km/h from E, gusts 3 mph5 km/h	96%	85%	0
Sun 6a	Cloudy	39°4° (likely 37°3° to 39°4°)	39°4°	0%	2 mph3 km/h from E, gusts 6 mph10 km/h	96%	81%	0
Sun 7a	Mostly sunny	39°4° (likely 36°2° to 39°4°)	39°4°	0%	2 mph3 km/h from E, gusts 6 mph9 km/h	92%	51%	0
Sun 8a	Cloudy	39°4° (likely 36°2° to 41°5°)	39°4°	0%	2 mph3 km/h from NE, gusts 7 mph12 km/h	100%	55%	0
Sun 9a	Mostly cloudy	41°5° (likely 39°4° to 43°6°)	39°4°	5%	3 mph5 km/h from NNE, gusts 8 mph13 km/h	96%	53%	1
Sun 10a	Sunny	45°7° (likely 42°6° to 45°7°)	44°7°	5%	3 mph5 km/h from NNE, gusts 9 mph14 km/h	86%	23%	2
Sun 11a	Mostly cloudy	48°9° (likely 45°7° to 48°9°)	47°8°	5%	3 mph5 km/h from NE, gusts 8 mph12 km/h	80%	26%	3
Sun 12p	Sunny	50°10° (likely 47°8° to 51°11°)	49°9°	10%	3 mph5 km/h from NE, gusts 7 mph12 km/h	71%	22%	4
Sun 1p	Sunny	52°11° (likely 50°10° to 54°12°)	52°11°	10%	3 mph5 km/h from NNE, gusts 8 mph13 km/h	69%	16%	5
Sun 2p	Sunny	54°12° (likely 52°11° to 56°13°)	54°12°	10%	5 mph8 km/h from NNE, gusts 9 mph15 km/h	61%	12%	5
Sun 3p	Sunny	55°13° (likely 54°12° to 57°14°)	55°13°	20%	5 mph8 km/h from NNE, gusts 10 mph15 km/h	61%	4%	4
Sun 4p	Showers	55°13° (likely 54°12° to 57°14°)	55°13°	20%	6 mph10 km/h from N, gusts 8 mph12 km/h	59%	50%	3
Sun 5p	Mostly sunny	54°12° (likely 53°12° to 56°13°)	54°12°	20%	6 mph10 km/h from N, gusts 9 mph15 km/h	64%	57%	1
Sun 6p	Cloudy	52°11° (likely 50°10° to 54°12°)	52°11°	70%, 0.06 in1.5 mm	6 mph10 km/h from N, gusts 11 mph18 km/h	69%	68%	0
Sun 7p	Cloudy	50°10° (likely 48°9° to 52°11°)	48°9°	70%, 0.06 in1.5 mm	6 mph10 km/h from N, gusts 12 mph20 km/h	80%	86%	0
Sun 8p	Cloudy	47°8° (likely 47°8° to 51°11°)	44°7°	70%, 0.06 in1.5 mm	6 mph10 km/h from N, gusts 17 mph28 km/h	89%	96%	0
Sun 9p	Cloudy	47°8° (likely 47°8° to 50°10°)	44°7°	70%, 0.06 in1.5 mm	6 mph10 km/h from N, gusts 17 mph28 km/h	89%	100%	0
Sun 10p	Cloudy	46°8° (likely 46°8° to 50°10°)	44°7°	70%, 0.06 in1.5 mm	5 mph8 km/h from N, gusts 17 mph27 km/h	96%	94%	0
Sun 11p	Cloudy	45°7° (likely 45°7° to 50°10°)	43°6°	70%, 0.06 in1.5 mm	5 mph8 km/h from N, gusts 15 mph24 km/h	96%	100%	0
Mon 12a	Cloudy	46°8° (likely 45°7° to 49°9°)	46°8°	60%, 0.05 in1.3 mm	2 mph3 km/h from N, gusts 15 mph24 km/h	93%	100%	0
Mon 1a	Showers	45°7° (likely 44°7° to 47°8°)	45°7°	60%, 0.05 in1.3 mm	2 mph3 km/h from N, gusts 13 mph20 km/h	96%	100%	0
Mon 2a	Showers	44°7° (likely 44°7° to 47°8°)	44°7°	60%, 0.05 in1.3 mm	2 mph3 km/h from N, gusts 14 mph22 km/h	96%	100%	0
Mon 3a	Showers	43°6° (likely 43°6° to 48°9°)	43°6°	60%, 0.05 in1.3 mm	2 mph3 km/h from N, gusts 11 mph18 km/h	100%	100%	0
Mon 4a	Showers	43°6° (likely 43°6° to 48°9°)	43°6°	60%, 0.05 in1.3 mm	2 mph3 km/h from N, gusts 9 mph15 km/h	96%	100%	0
Mon 5a	Drizzle	42°6° (likely 42°6° to 48°9°)	42°6°	60%, 0.05 in1.3 mm	1 mph2 km/h from N, gusts 12 mph20 km/h	100%	100%	0
Mon 6a	Cloudy	41°5° (likely 41°5° to 46°8°)	41°5°	20%, 0.01 in0.3 mm	1 mph2 km/h from N, gusts 16 mph25 km/h	100%	100%	0
Mon 7a	Showers	40°4° (likely 40°4° to 45°7°)	40°4°	20%, 0.01 in0.3 mm	2 mph3 km/h from N, gusts 16 mph26 km/h	100%	83%	0
Mon 8a	Cloudy	41°5° (likely 41°5° to 45°7°)	39°4°	20%, 0.01 in0.3 mm	3 mph5 km/h from NNE, gusts 14 mph22 km/h	100%	96%	0
Mon 9a	Cloudy	43°6° (likely 42°6° to 46°8°)	41°5°	20%, 0.01 in0.3 mm	3 mph5 km/h from NE, gusts 11 mph18 km/h	100%	79%	0
Mon 10a	Cloudy	47°8° (likely 44°7° to 47°8°)	47°8°	20%, 0.01 in0.3 mm	2 mph3 km/h from ENE, gusts 9 mph14 km/h	89%	85%	1
Mon 11a	Cloudy	50°10° (likely 46°8° to 50°10°)	50°10°	20%, 0.01 in0.3 mm	2 mph3 km/h from SE, gusts 7 mph12 km/h	80%	85%	3
Mon 12p	Mostly sunny	54°12° (likely 47°8° to 54°12°)	54°12°	0%	3 mph5 km/h from SSE, gusts 6 mph10 km/h	66%	71%	3
Mon 1p	Mostly sunny	57°14° (likely 50°10° to 57°14°)	57°14°	0%	5 mph8 km/h from SSE, gusts 5 mph8 km/h	57%	47%	4
Mon 2p	Mostly sunny	60°16° (likely 52°11° to 60°16°)	60°16°	0%	5 mph8 km/h from SE, gusts 5 mph8 km/h	51%	31%	5
Mon 3p	Mostly sunny	61°16° (likely 54°12° to 61°16°)	61°16°	0%	5 mph8 km/h from SE, gusts 6 mph9 km/h	48%	15%	4
Mon 4p	Mostly sunny	61°16° (likely 55°13° to 61°16°)	61°16°	0%	5 mph8 km/h from ESE, gusts 6 mph10 km/h	48%	9%	3
Mon 5p	Sunny	59°15° (likely 55°13° to 59°15°)	59°15°	0%	3 mph5 km/h from ESE, gusts 7 mph11 km/h	49%	4%	1
Mon 6p	Clear	57°14° (likely 51°11° to 57°14°)	57°14°	0%	3 mph5 km/h from E, gusts 7 mph11 km/h	53%	1%	0
Mon 7p	Clear	54°12° (likely 48°9° to 54°12°)	54°12°	0%	2 mph3 km/h from S, gusts 3 mph5 km/h	59%	1%	0
Mon 8p	Clear	50°10° (likely 43°6° to 50°10°)	50°10°	0%	1 mph2 km/h from SW, gusts 3 mph6 km/h	66%	2%	0
Mon 9p	Clear	46°8° (likely 40°4° to 47°8°)	46°8°	0%	1 mph2 km/h from W, gusts 3 mph5 km/h	76%	2%	0

Days ahead

Shaded: typical range for these dates (1991–2020)

Today, Oct 24. Drizzle. High 56°13°, low 38°3°. Typical 62°17° / 30°−1°. Rain 0.01 in0.3 mm, 40% chance. Mostly agree.
1. Evening
  6 PM–midnight
  Cloudy, 45°7°
  20% chance · 0.02 in0.5 mm
2. Overnight
  midnight–6 AM
  Cloudy, 40°4°
  Dry
Official NWS forecast
Tonight: A slight chance of rain showers before midnight. Cloudy. Low around 38, with temperatures rising to around 40 overnight. East southeast wind around 2 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
54°12°–58°14°
Low, likely
38°3°–45°7°
Typical high / low
62°17° / 30°−1°
Wind
12 mph19 km/h, gusts 19 mph30 km/h
UV peak
5
Tomorrow, Oct 25. Mostly cloudy. High 55°13°, low 40°4°. Typical 62°17° / 30°−1°. Rain 0.03 in0.8 mm, 20% chance. Mostly agree.
1. Morning
  6 AM–noon
  Mostly cloudy, 39°4°
  Dry
2. Afternoon
  noon–6 PM
  Showers, 55°13°
  20% chance
3. Evening
  6 PM–midnight
  Cloudy, 47°8°
  70% chance · 0.36 in9.1 mm
4. Overnight
  midnight–6 AM
  Showers, 42°6°
  60% chance · 0.3 in7.6 mm
Official NWS forecast
Day: A slight chance of rain showers after 3pm. Mostly cloudy, with a high near 55. Northeast wind 2 to 6 mph. Chance of precipitation is 20%.
Night: Showers and thunderstorms likely. Mostly cloudy. Low around 40, with temperatures rising to around 42 overnight. North wind 1 to 6 mph. Chance of precipitation is 70%.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
55°13°–58°14°
Low, likely
36°2°–40°4°
Typical high / low
62°17° / 30°−1°
Wind
15 mph24 km/h, gusts 23 mph36 km/h
UV peak
5
Monday, Oct 26. Drizzle. High 61°16°, low 34°1°. Typical 62°17° / 30°−1°. Rain 0.07 in1.8 mm, 20% chance. Mostly agree.
1. Morning
  6 AM–noon
  Showers, 41°5°
  20% chance · 0.06 in1.5 mm
2. Afternoon
  noon–6 PM
  Mostly sunny, 61°16°
  Dry
3. Evening
  6 PM–midnight
  Clear, 50°10°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 35°2°
  Dry
Official NWS forecast
Day: A slight chance of rain showers before noon. Mostly sunny, with a high near 61. East wind 1 to 5 mph. Chance of precipitation is 20%.
Night: Mostly clear, with a low around 34. West southwest wind 0 to 3 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
54°12°–61°16°
Low, likely
34°1°–43°6°
Typical high / low
62°17° / 30°−1°
Wind
11 mph18 km/h, gusts 23 mph37 km/h
UV peak
5
Tuesday, Oct 27. Mostly sunny. High 67°19°, low 35°2°. Typical 61°16° / 29°−2°. Dry. Mostly agree. Best day outdoors this week.
1. Morning
  6 AM–noon
  Partly sunny, 37°3°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 65°18°
  Dry
3. Evening
  6 PM–midnight
  Clear, 49°9°
  Dry
4. Overnight
  midnight–6 AM
  Partly cloudy, 37°3°
  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 35.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
Best day outdoors this week: the one dry, mild day the forecasts agree on (high 67°19°).
High, likely
63°17°–67°19°
Low, likely
31°−1°–38°3°
Typical high / low
61°16° / 29°−2°
Wind
13 mph21 km/h
UV peak
4
Wednesday, Oct 28. Mostly sunny. High 66°19°, low 36°2°. Typical 61°16° / 29°−2°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 40°5°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 64°18°
  Dry
3. Evening
  6 PM–midnight
  Clear, 50°10°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 39°4°
  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 36.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
61°16°–67°19°
Low, likely
33°1°–41°5°
Typical high / low
61°16° / 29°−2°
Wind
7 mph12 km/h, gusts 32 mph51 km/h
UV peak
4
Thursday, Oct 29. Cloudy. High 67°19°, low 39°4°. Typical 60°16° / 29°−2°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Cloudy, 41°5°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 65°18°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 51°11°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 42°5°
  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 39.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
63°17°–67°19°
Low, likely
36°2°–42°6°
Typical high / low
60°16° / 29°−2°
Wind
7 mph10 km/h, gusts 15 mph25 km/h
UV peak
4
Friday, Oct 30. Mostly cloudy. High 67°19°, low 40°4°. Typical 60°16° / 28°−2°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 45°7°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 64°18°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 53°12°
  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 67.
Night: Mostly cloudy, with a low around 40.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
60°16°–67°19°
Low, likely
38°3°–45°7°
Typical high / low
60°16° / 28°−2°
Wind
7 mph11 km/h, gusts 18 mph29 km/h
UV peak
3
Saturday, Oct 31. Mostly cloudy. High 64°18°, low 44°7°. Typical 60°16° / 28°−2°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 47°8°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 59°15°
  20% chance
3. Evening
  6 PM–midnight
  Cloudy, 50°10°
  30% chance
4. Overnight
  midnight–6 AM
  Cloudy, 42°6°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: A slight chance of rain showers after noon. Partly sunny, with a high near 64.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
54°12°–65°18°
Low, likely
40°4°–48°9°
Typical high / low
60°16° / 28°−2°
Wind
18 mph29 km/h
UV peak
4
Sunday, Nov 1. Drizzle. High 56°13°, low 41°5°. Typical 59°15° / 28°−2°. Rain 0.05 in1.3 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Partly sunny, 45°7°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 58°14°
  20% chance
3. Evening
  6 PM–midnight
  Partly cloudy, 49°9°
  30% chance
4. Overnight
  midnight–6 AM
  Cloudy, 42°5°
  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°–65°18°
Low, likely
37°3°–44°7°
Typical high / low
59°15° / 28°−2°
Wind
9 mph14 km/h, gusts 16 mph26 km/h
UV peak
4
Monday, Nov 2. Drizzle. High 56°13°, low 40°4°. Typical 59°15° / 28°−2°. Rain 0.11 in2.8 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 46°8°
  20% chance
2. Afternoon
  noon–6 PM
  Drizzle, 57°14°
  30% chance · 0.04 in1.1 mm
3. Evening
  6 PM–midnight
  Drizzle, 45°7°
  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
50°10°–68°20°
Low, likely
34°1°–43°6°
Typical high / low
59°15° / 28°−2°
Wind
10 mph16 km/h, gusts 27 mph43 km/h

10 days15 days30 days

The outlook

Today
36% chance of rain, high 56°, low 38°.
Tomorrow
Dry, high 55°, low 40°.
Monday
Dry, high 61°, low 34°, warming up.
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.

3.3 mi

Below flood stage

Level: 4.1 ft
Flow: under 1 cfs

Reading from Sat 9:15 PM · NWS gauge page

Boulder Creek (CO) below Broadway St

8.6 mi

Below flood stage

Level: 1.1 ft
Flow: 24 cfs

Reading from Sat 4:15 PM · NWS gauge page

Saint Vrain Creek below Longmont

9.1 mi

Below flood stage

Level: 10.2 ft
Flow: 115 cfs

Reading from Sat 9 PM · NWS gauge page

Saint Vrain Creek at Lyons

9.9 mi

Below flood stage

Level: 2.8 ft

Reading from Sat 9:15 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 34Typical 139

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 28
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 12 hours are near freezing and damp, when outdoor units defrost more often.

Comfort

Dry air outside (dew point 35°F).

Open the windows?

Mon, 2:00 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 6°3° colder than typical.

Last 7 days vs normal

On average 11°6° warmer than normal (daily mean temperature).

+9°+5°MonOct 19
+6°+3°TueOct 20
+9°+5°WedOct 21
+13°+7°ThuOct 22
+13°+7°FriOct 23
+16°+9°SatOct 24
—SunOct 25

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

Sun & moon

Sun

Daylight: 10 h 47 min; Losing 2 min 35 s a day; shortest Dec 21, 1 h 28 min less
Golden hour: 5:30–6:24 PM; Morning 7:04–7:58 AM
Blue hour: 6:24–6:35 PM; Morning 6:53–7:04 AM; first light 6:53 AM

Stars tonight? Poor

Clouds most of the night (about 87% cover).

Moon

Waxing gibbous

99% lit · growing

Today: sets 5:38 AM · rises 5:06 PM
Full moon: Oct 25
New moon: Nov 9

Looking west from Niwot. The highest point on the skyline is about 14,100 ft, 27 mi away.Skyline from USGS elevation data, heights drawn up to 6× 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.

(303) 250-1000 Check the service area

Niwot, CO weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Monday

Rest of week

What changed since yesterday

Radar

Rivers

Boulder Creek (CO) at North 75TH St.

Boulder Creek (CO) below Broadway St

Saint Vrain Creek below Longmont

Saint Vrain Creek at Lyons

For your home

Heating this week

Heat-pump hours, next 7 days

Comfort

Open the windows?

Is this typical?

Oct 24, today vs a typical year

Last 7 days vs normal

Sun & moon

Sun

Stars tonight? Poor

Moon

UniColorado Heating & Cooling, a Denver HVAC installer