Weather Forecast for Boulder
Colorado, United States of America
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Current Weather - Boulder: 21°C
Current Weather - Boulder: 21°C
Colorado, United States of America
Sunny
Feels like 21°C
Wind
24 km/h WSW
Humidity
13%
Pressure
1004 mb
UV Index
5
Visibility
16 km
Sunny
Saturday, March 14, 2026
High
21°C
Low
5°C
Rain Chance
0%
Hourly Forecast
9°C
7°C
6°C
5°C
Day Statistics
Maximum Wind
76 km/h
Humidity
34%
Precipitation
0 mm
UV Index
1
Visibility
10 km
Rain Chance
0%
Snow Chance
0%
Sun & Moon
Sunrise
07:14 AM
Sunset
07:07 PM
Moonrise
05:04 AM
Moonset
02:32 PM
Moon Phase
Waning Crescent
Moon Illumination
26%
Air Quality
PM2.5
3.8
μg/m³
PM10
4.7
μg/m³
NO₂
5.9
μg/m³
O₃
82.9
μg/m³
SO₂
1.6
μg/m³
CO
122.5
μg/m³
Moderate snow
Sunday, March 15, 2026
High
-1°C
Low
-5°C
Rain Chance
78%
Hourly Forecast
4°C
3°C
1°C
1°C
-0°C
-1°C
-2°C
-3°C
-3°C
-3°C
-2°C
-2°C
-2°C
-1°C
-1°C
-1°C
-2°C
-2°C
-2°C
-2°C
-3°C
-3°C
-4°C
-5°C
Day Statistics
Maximum Wind
34 km/h
Humidity
44%
Precipitation
1 mm
UV Index
1
Visibility
10 km
Rain Chance
78%
Snow Chance
3%
Sun & Moon
Sunrise
07:12 AM
Sunset
07:08 PM
Moonrise
05:36 AM
Moonset
03:40 PM
Moon Phase
Waning Crescent
Moon Illumination
18%
Air Quality
PM2.5
2.8
μg/m³
PM10
6.7
μg/m³
NO₂
2.4
μg/m³
O₃
104.5
μg/m³
SO₂
1.3
μg/m³
CO
132.3
μg/m³
Partly Cloudy
Monday, March 16, 2026
High
10°C
Low
-9°C
Rain Chance
0%
Hourly Forecast
-5°C
-5°C
-5°C
-6°C
-7°C
-8°C
-7°C
-6°C
-5°C
-3°C
0°C
3°C
5°C
7°C
8°C
8°C
8°C
8°C
8°C
7°C
6°C
5°C
4°C
3°C
Day Statistics
Maximum Wind
21 km/h
Humidity
47%
Precipitation
0 mm
UV Index
1
Visibility
10 km
Rain Chance
0%
Snow Chance
0%
Sun & Moon
Sunrise
07:11 AM
Sunset
07:09 PM
Moonrise
06:03 AM
Moonset
04:48 PM
Moon Phase
Waning Crescent
Moon Illumination
11%
Air Quality
PM2.5
4.3
μg/m³
PM10
4.9
μg/m³
NO₂
9.3
μg/m³
O₃
98.9
μg/m³
SO₂
2.1
μg/m³
CO
204.9
μg/m³
Sunny
Tuesday, March 17, 2026
High
18°C
Low
3°C
Rain Chance
0%
Hourly Forecast
3°C
4°C
4°C
4°C
4°C
4°C
5°C
6°C
7°C
9°C
11°C
13°C
15°C
16°C
17°C
17°C
17°C
17°C
16°C
15°C
14°C
14°C
13°C
13°C
Day Statistics
Maximum Wind
49 km/h
Humidity
43%
Precipitation
0 mm
UV Index
0
Visibility
10 km
Rain Chance
0%
Snow Chance
0%
Sun & Moon
Sunrise
07:09 AM
Sunset
07:10 PM
Moonrise
06:28 AM
Moonset
05:58 PM
Moon Phase
Waning Crescent
Moon Illumination
5%
Air Quality
PM2.5
4.6
μg/m³
PM10
5.8
μg/m³
NO₂
10.2
μg/m³
O₃
84.8
μg/m³
SO₂
1.8
μg/m³
CO
175.2
μg/m³
Sunny
Wednesday, March 18, 2026
High
23°C
Low
7°C
Rain Chance
0%
Hourly Forecast
12°C
12°C
11°C
10°C
9°C
9°C
8°C
8°C
11°C
15°C
17°C
19°C
21°C
22°C
22°C
23°C
23°C
22°C
20°C
17°C
15°C
13°C
13°C
12°C
Day Statistics
Maximum Wind
32 km/h
Humidity
23%
Precipitation
0 mm
UV Index
5
Visibility
10 km
Rain Chance
0%
Snow Chance
0%
Sun & Moon
Sunrise
07:08 AM
Sunset
07:11 PM
Moonrise
06:51 AM
Moonset
07:08 PM
Moon Phase
Waning Crescent
Moon Illumination
1%
Air Quality
PM2.5
4.6
μg/m³
PM10
7.1
μg/m³
NO₂
9.5
μg/m³
O₃
81.9
μg/m³
SO₂
1.6
μg/m³
CO
151
μg/m³
Sunny
Thursday, March 19, 2026
High
25°C
Low
9°C
Rain Chance
0%
Hourly Forecast
12°C
12°C
12°C
11°C
11°C
10°C
10°C
11°C
12°C
15°C
18°C
21°C
23°C
24°C
24°C
24°C
24°C
24°C
22°C
19°C
16°C
14°C
13°C
12°C
Day Statistics
Maximum Wind
30 km/h
Humidity
21%
Precipitation
0 mm
UV Index
5
Visibility
10 km
Rain Chance
0%
Snow Chance
0%
Sun & Moon
Sunrise
07:06 AM
Sunset
07:12 PM
Moonrise
07:15 AM
Moonset
08:20 PM
Moon Phase
New Moon
Moon Illumination
0%
Sunny
Friday, March 20, 2026
High
27°C
Low
9°C
Rain Chance
0%
Hourly Forecast
11°C
11°C
11°C
10°C
10°C
9°C
11°C
13°C
15°C
17°C
20°C
23°C
24°C
25°C
26°C
26°C
26°C
25°C
23°C
20°C
17°C
15°C
14°C
13°C
Day Statistics
Maximum Wind
22 km/h
Humidity
20%
Precipitation
0 mm
UV Index
5
Visibility
10 km
Rain Chance
0%
Snow Chance
0%
Sun & Moon
Sunrise
07:04 AM
Sunset
07:13 PM
Moonrise
07:40 AM
Moonset
09:35 PM
Moon Phase
Waxing Crescent
Moon Illumination
1%
Solar Radiation Data
Shortwave Radiation
624.76
Diffuse Radiation
285.97
DNI
41797
GTI
0
Weather Alerts
Red Flag Warning issued March 14 at 3:36AM MDT until March 14 at 9:00PM MDT by NWS Denver CO
* AFFECTED AREA...Fire Weather Zones 238, 239, 240, 241, 242, 243, 244, 245, 246, 247, 248, 249, 250 and 251. * TIMING...From 11 AM this morning to 9 PM MDT this evening. * WINDS...West 25 to 35 mph with gusts up to 60 mph. Areas near the foothills, from Boulder county into northern Jefferson county, may see winds gusts from 65 to 70 mph for a few hours this afternoon, * RELATIVE HUMIDITY...As low as 8 percent. * IMPACTS...Conditions will be favorable for rapid fire spread. Avoid outdoor burning and any activity that may produce a spark and start a wildfire.
A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior.
Winter Weather Advisory issued March 14 at 3:05AM MDT until March 15 at 9:00AM MDT by NWS Denver CO
* WHAT...Snow expected. Total snow accumulations between 4 and 10 inches. Winds gusting as high as 65 mph near and above timberline. * WHERE...Rabbit Ears Pass, Rocky Mountain National Park and the Medicine Bow Range, and The Mountains of Summit County, the Mosquito Range, and the Indian Peaks. * WHEN...From 6 PM this evening to 9 AM MDT Sunday. * IMPACTS...Plan on slippery road conditions. Blowing snow may produce near whiteout conditions at times, particularly for mountain passes over the Continental Divide.
Slow down and use caution while traveling. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip.org. Roads will be slick resulting in slow and hazardous travel. Allow extra time to reach your destination.
High Wind Watch issued March 14 at 3:04AM MDT until March 15 at 6:00PM MDT by NWS Denver CO
* WHAT...North winds 30 to 40 mph with gusts up to 60 mph possible. * WHERE...Denver. * WHEN...From this evening through Sunday afternoon. * IMPACTS...Damaging winds could blow down trees and power lines. Widespread power outages are possible. Travel could be difficult, especially for high profile vehicles.
Monitor the latest forecasts and warnings for updates.
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