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Weather Forecast for Fort Collins

Colorado, United States of America

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Current Weather - Fort Collins: 23°C

Colorado, United States of America

Clear

Feels like 18°C

Wind

10 km/h WNW

Humidity

39%

Pressure

1011 mb

UV Index

0

Visibility

10 km
Sunny

Sunny

Sunday, July 26, 2026

High

40°C

Low

22°C

Rain Chance

2%

Hourly Forecast

Partly Cloudy 35°C
10:00
Sunny 37°C
11:00
Sunny 38°C
12:00
Partly Cloudy 39°C
13:00
Partly Cloudy 40°C
14:00
Partly Cloudy 39°C
15:00
Partly Cloudy 37°C
16:00
Sunny 35°C
17:00
Sunny 34°C
18:00
Sunny 31°C
19:00
Cloudy 29°C
20:00
Partly Cloudy 28°C
21:00
Clear 26°C
22:00
Partly Cloudy 25°C
23:00
Jul 27

Day Statistics

Maximum Wind

39 km/h

Humidity

28%

Precipitation

0 mm

UV Index

11

Visibility

10 km

Rain Chance

2%

Snow Chance

0%

Sun & Moon

Sunrise

05:51 AM

Sunset

08:21 PM

Moonrise

07:08 PM

Moonset

03:00 AM

Moon Phase

Waxing Gibbous

Moon Illumination

95%

Air Quality

PM2.5

3.9

μg/m³

PM10

4.8

μg/m³

NO₂

6.3

μg/m³

O₃

86.5

μg/m³

SO₂

0.3

μg/m³

CO

117.9

μg/m³

US EPA Index: 1 GB DEFRA Index: 1

Weather Alerts

Heat Advisory issued July 25 at 2:47PM MDT until July 26 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; Central and South Weld County Jul 25, 02:47 PM - Jul 25, 09:00 PM
Severity: Moderate Urgency: Expected

* WHAT...Temperatures of 99 to 105 on both today and Sunday. * WHERE...Fort Collins, Boulder, Denver metro, and Greeley. * WHEN...From 10 AM to 9 PM MDT both today and Sunday. * IMPACTS...Hot temperatures may cause heat illnesses.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.

Event: Heat Advisory Certainty: Likely Category: Met

Heat Advisory issued July 25 at 2:47PM MDT until July 25 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; Central and South Weld County Jul 25, 02:47 PM - Jul 25, 09:00 PM
Severity: Moderate Urgency: Expected

* WHAT...Temperatures of 99 to 105 on both today and Sunday. * WHERE...Fort Collins, Boulder, Denver metro, and Greeley. * WHEN...From 10 AM to 9 PM MDT both today and Sunday. * IMPACTS...Hot temperatures may cause heat illnesses.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.

Event: Heat Advisory Certainty: Likely Category: Met

Heat Advisory issued July 25 at 9:05PM MDT until July 26 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; Central and South Weld County Jul 25, 09:05 PM - Jul 26, 06:00 AM
Severity: Moderate Urgency: Expected

* WHAT...High temperatures of 100 to 104 expected Sunday. * WHERE...Fort Collins, Boulder, Denver metro, and Greeley. * WHEN...From 10 AM to 9 PM MDT Sunday. * IMPACTS...Hot temperatures may cause heat illnesses.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.

Event: Heat Advisory Certainty: Likely Category: Met