Niwot, Colorado Weather
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Weather Forecast for Niwot, Colorado : Boulder County
Issued: 2:08 pm MDT Sep 8, 2025 Latitude: 40.103874 Longitude: -105.1708193 View on Google Maps

MouseOver for Detail Forecast
This Afternoon Tonight Tuesday Wednesday Thursday Friday Saturday Sunday
20% chance of thunderstorms on This Afternoon 20% chance of rain on Tonight 20% chance of thunderstorms on Tuesday Mostly Sunny on Wednesday 20% chance of thunderstorms on Thursday 20% chance of thunderstorms on Friday 20% chance of thunderstorms on Saturday Sunny on Sunday
High: 86°F Low: 54°F High: 85°F High: 86°F High: 86°F High: 81°F High: 78°F High: 80°F
Low: 52°F Low: 55°F Low: 54°F Low: 50°F Low: 48°F  
Thunderstorms Rain Thunderstorms Mostly Sunny Thunderstorms Thunderstorms Thunderstorms Sunny
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Current Conditions at
FT COLLINS - (KFNL)
88°
Mostly Clear
as of 2:33 PM MDST
Rel. Humidity: 16%
Dew Point: 37°F
Visibility: 10 Miles
Pressure: 30.09 in.
Flight Rule: VFR
Wind Data
10 MPH
Gust: 17 MPH
350° North
Cloud Level(s): Few at 12000ft
20% chance of thunderstorms This Afternoon This Afternoon... A 20 percent chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 86. West northwest wind 7 to 9 mph, with gusts as high as 15 mph.

20% chance of rain Tonight Tonight... A 20 percent chance of showers before 9pm. Partly cloudy, with a low around 54. West southwest wind 3 to 6 mph.

20% chance of thunderstorms Tuesday Tuesday... A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 85. Calm wind becoming southeast around 6 mph in the afternoon.

Cloudy on Tuesday Night Tuesday Night... Partly cloudy, with a low around 52. West wind 5 to 7 mph becoming calm after midnight.

Mostly Sunny on Wednesday Wednesday... Mostly sunny, with a high near 86. Calm wind becoming south southeast around 6 mph in the afternoon.

Mostly Cloudy on Wednesday Night Wednesday Night... Mostly cloudy, with a low around 55.

20% chance of thunderstorms Thursday Thursday... A 20 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 86.

10% chance of rain Thursday Night Thursday Night... A slight chance of showers. Mostly cloudy, with a low around 54.

20% chance of thunderstorms Friday Friday... A slight chance of showers, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 81.

20% chance of thunderstorms Friday Night Friday Night... A chance of showers and thunderstorms before midnight, then a slight chance of showers. Mostly cloudy, with a low around 50.

20% chance of thunderstorms Saturday Saturday... A chance of showers and thunderstorms. Mostly sunny, with a high near 78.

10% chance of rain Saturday Night Saturday Night... A slight chance of showers. Partly cloudy, with a low around 48.

Sunny on Sunday Sunday... Sunny, with a high near 80.

Sun Almanac for Niwot, Colorado
Sunrise: 06:36 AM
Sunset: 7:21 PM
Civil Sunrise:06:08 AM
Civil Sunset: 7:48 PM
Nautical Sunrise: 05:36 AM
Nautical Sunset: 8:21 PM
Astro Sunrise: 05:02 AM
Astro Sunset: 8:54 PM
Any use of the information on this page is at your own risk. This information should not be relied upon in life-threatening situations, potential financial loss situations or in lieu of any officially disseminated information. Visit the National Weather Service for official information.