Weather Forecast for Boulder

Colorado, United States of America

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Sunny

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

Sunny

Saturday, March 14, 2026

High

21°C

Low

5°C

Rain Chance

0%

Hourly Forecast

Clear 9°C
20:00
Clear 7°C
21:00
Clear 6°C
22:00
Clear 5°C
23:00
Mar 15

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

US EPA Index: 1 GB DEFRA Index: 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

Larimer County Below 6000 Feet/Northwest Weld County; Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County; North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County; Elbert/Central and East Douglas Counties Above 6000 Feet; Northeast Weld County; Central and South Weld County; Morgan County; Central and East Adams and Arapahoe Counties; North and Northeast Elbert County Below 6000 Feet/North Lincoln County; Southeast Elbert County Below 6000 Feet/South Lincoln County; Logan County; Washington County; Sedgwick County; Phillips County Mar 14, 03:36 AM - Mar 14, 03:45 PM
Severity: Severe Urgency: Expected

* 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.

Event: Red Flag Warning Certainty: Likely Category: Met

Winter Weather Advisory issued March 14 at 3:05AM MDT until March 15 at 9:00AM MDT by NWS Denver CO

West Jackson and West Grand Counties Above 9000 Feet; South and East Jackson/Larimer/North and Northeast Grand/Northwest Boulder Counties Above 9000 Feet; South and Southeast Grand/West Central and Southwest Boulder/Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet Mar 14, 03:05 AM - Mar 14, 03:15 PM
Severity: Moderate Urgency: Expected

* 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.

Event: Winter Weather Advisory Certainty: Likely Category: Met

High Wind Watch issued March 14 at 3:04AM MDT until March 15 at 6:00PM MDT by NWS Denver CO

North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County Mar 14, 03:04 AM - Mar 14, 03:15 PM
Severity: Severe Urgency: Future

* 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.

Event: High Wind Watch Certainty: Possible Category: Met