Weather Forecast for Flagstaff

Arizona, United States of America

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Patchy rain nearby

Current Weather - Flagstaff: 19°C

Arizona, United States of America

Patchy rain nearby

Feels like 19°C

Wind

4 km/h S

Humidity

70%

Pressure

1027 mb

UV Index

5

Visibility

16 km

Patchy rain nearby

Patchy rain nearby

Tuesday, July 21, 2026

High

27°C

Low

16°C

Rain Chance

71%

Hourly Forecast

Patchy light rain 19°C
18:00
Moderate rain at times 17°C
19:00
Light rain shower 16°C
20:00
Patchy rain nearby 16°C
21:00
Partly Cloudy 16°C
22:00
Partly Cloudy 16°C
23:00
Jul 22

Day Statistics

Maximum Wind

17 km/h

Humidity

68%

Precipitation

12 mm

UV Index

12

Visibility

10 km

Rain Chance

71%

Snow Chance

0%

Sun & Moon

Sunrise

05:27 AM

Sunset

07:38 PM

Moonrise

01:24 PM

Moonset

11:53 PM

Moon Phase

First Quarter

Moon Illumination

53%

Air Quality

PM2.5

3.2

μg/m³

PM10

5.2

μg/m³

NO₂

3.3

μg/m³

O₃

84.2

μg/m³

SO₂

0.2

μg/m³

CO

121.8

μg/m³

US EPA Index: 1 GB DEFRA Index: 1

Solar Radiation Data

Shortwave Radiation

250.21

Diffuse Radiation

49.94

DNI

0

GTI

0

Weather Alerts

Flood Watch issued July 20 at 7:50PM MST until July 21 at 10:00PM MST by NWS Flagstaff AZ

Kaibab Plateau; Marble and Glen Canyons; Grand Canyon Country; Coconino Plateau; Yavapai County Mountains; Northeast Plateaus and Mesas Hwy 264 Northward; Little Colorado River Valley in Coconino County; Little Colorado River Valley in Navajo County; Little Colorado River Valley in Apache County; Western Mogollon Rim; Eastern Mogollon Rim; White Mountains; Northern Gila County; Black Mesa Area; Northeast Plateaus and Mesas South of Hwy 264 Jul 20, 07:50 PM - Jul 21, 10:00 PM
Severity: Severe Urgency: Future

* WHAT...Flash flooding caused by excessive rainfall continues to be possible. * WHERE...Portions of east central, north central, northeast, and west central Arizona, including the following areas, in east central Arizona, Northern Gila County. In north central Arizona, Black Mesa Area, Coconino Plateau, Eastern Mogollon Rim, Grand Canyon Country, Kaibab Plateau, Little Colorado River Valley in Coconino County, Marble and Glen Canyons, Northeast Plateaus and Mesas Hwy 264 Northward, Northeast Plateaus and Mesas South of Hwy 264 and Western Mogollon Rim. In northeast Arizona, Little Colorado River Valley in Apache County, Little Colorado River Valley in Navajo County and White Mountains. In west central Arizona, Yavapai County Mountains. * WHEN...From Tuesday morning through Tuesday evening. * IMPACTS...Flash flooding will be possible in creeks, normally dry washes, swimming holes, and over recently burned areas. Raging killer currents will be possible in side canyons and narrow slot canyons. Low-water crossings may be flooded. * ADDITIONAL DETAILS... - Deep monsoon moisture in place across northern Arizona will lead to storms capable of producing rainfall in excess of 2 inches per hour, resulting in an enhanced risk of flash flooding. - Additional information is available at weather.gov/flagstaff.

Have a way to receive Flash Flood Warnings and be prepared to take action should warnings be issued.

Event: Flood Watch Certainty: Possible Category: Met

Flood Watch issued July 20 at 10:33PM MST until July 21 at 10:00PM MST by NWS Flagstaff AZ

Kaibab Plateau; Marble and Glen Canyons; Grand Canyon Country; Coconino Plateau; Yavapai County Mountains; Northeast Plateaus and Mesas Hwy 264 Northward; Little Colorado River Valley in Coconino County; Little Colorado River Valley in Navajo County; Little Colorado River Valley in Apache County; Western Mogollon Rim; Eastern Mogollon Rim; White Mountains; Northern Gila County; Black Mesa Area; Northeast Plateaus and Mesas South of Hwy 264 Jul 20, 10:33 PM - Jul 21, 06:45 AM
Severity: Severe Urgency: Future

* WHAT...Flash flooding caused by excessive rainfall continues to be possible. * WHERE...Portions of east central, north central, northeast, and west central Arizona, including the following areas, in east central Arizona, Northern Gila County. In north central Arizona, Black Mesa Area, Coconino Plateau, Eastern Mogollon Rim, Grand Canyon Country, Kaibab Plateau, Little Colorado River Valley in Coconino County, Marble and Glen Canyons, Northeast Plateaus and Mesas Hwy 264 Northward, Northeast Plateaus and Mesas South of Hwy 264 and Western Mogollon Rim. In northeast Arizona, Little Colorado River Valley in Apache County, Little Colorado River Valley in Navajo County and White Mountains. In west central Arizona, Yavapai County Mountains. * WHEN...From Tuesday morning through Tuesday evening. * IMPACTS...Flash flooding will be possible in creeks, normally dry washes, swimming holes, and over recently burned areas. Raging killer currents will be possible in side canyons and narrow slot canyons. Low-water crossings may be flooded. * ADDITIONAL DETAILS... - Deep monsoon moisture in place across northern Arizona will lead to storms capable of producing rainfall in excess of 2 inches per hour, resulting in an enhanced risk of flash flooding. - Additional information is available at weather.gov/flagstaff.

Have a way to receive Flash Flood Warnings and be prepared to take action should warnings be issued.

Event: Flood Watch Certainty: Possible Category: Met

Flood Watch issued July 21 at 4:04AM MST until July 21 at 10:00PM MST by NWS Flagstaff AZ

Kaibab Plateau; Marble and Glen Canyons; Grand Canyon Country; Coconino Plateau; Yavapai County Mountains; Northeast Plateaus and Mesas Hwy 264 Northward; Little Colorado River Valley in Coconino County; Little Colorado River Valley in Navajo County; Little Colorado River Valley in Apache County; Western Mogollon Rim; Eastern Mogollon Rim; White Mountains; Northern Gila County; Yavapai County Valleys and Basins; Oak Creek and Sycamore Canyons; Black Mesa Area; Northeast Plateaus and Mesas South of Hwy 264 Jul 21, 04:04 AM - Jul 21, 10:00 PM
Severity: Severe Urgency: Future

* WHAT...Flash flooding caused by excessive rainfall continues to be possible. * WHERE...Yavapai County, Coconino County, northern Gila County, Navajo County, central and southern Apache County. * WHEN...From 11 AM MST /noon MDT/ this morning through this evening. * IMPACTS...Flash flooding will be possible in creeks, normally dry washes, swimming holes, and over recently burned areas. Raging killer currents will be possible in side canyons and narrow slot canyons. Low-water crossings may be flooded. * ADDITIONAL DETAILS... - Deep monsoon moisture in place across northern Arizona will lead to storms capable of producing rainfall in excess of 2 inches per hour, resulting in an enhanced risk of flash flooding. - Additional information is available at weather.gov/flagstaff.

Have a way to receive Flash Flood Warnings and be prepared to take action should warnings be issued. Consider changing your plans if you were going to hike, boat, or paddleboard to a slot canyon or normally dry wash. If you do still decide to recreate, check in at a nearby visitor center or ranger station.

Event: Flood Watch Certainty: Possible Category: Met