Heavy Rainfall and Severe Thunderstorm Threats; Heat Risk Expands; Monitoring the Tropics

Flash flooding risks continue for portions of the Four Corners and Great Basin through today. Severe thunderstorms are outlooked from the eastern Great Lakes, southern New England into the mid-Atlantic through Tuesday. Heat risk increases and expands across the center of the nation and across the Ohio Valley and mid-Atlantic this week. Continue to closely monitor tropical development in the Gulf. Read More >

Hazardous Weather Conditions

Flood Watch until September 1, 12:00 AM MST

Current conditions at

KL1SF-7 Grand Canyon (AR412)

Lat: 36.048°NLon: 112.1245°WElev: 6977.0ft.

54°F

12°C

Humidity	87%
Wind Speed	ESE 0 MPH
Barometer	30.25 in (1024.38 mb)
Dewpoint	50°F (10°C)
Visibility	NA
Last update	31 Aug 02:03 PM MST

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

Grand Canyon AZ

Flood Watch August 31, 02:15pm until September 1, 12:00am

Click here for hazard details and duration

Flood Watch

Flood Watch August 31, 02:15pm until September 1, 12:00am
NOW until 12:00am Tue
Flood Watch
This Afternoon
High: 67 °F
T-storms
Tonight
Low: 51 °F
Showers
Likely then
Slight Chance
Showers
Tuesday
High: 72 °F
Chance
T-storms
Tuesday Night
Low: 51 °F
Slight Chance
T-storms then
Mostly Clear
Wednesday
High: 73 °F
Slight Chance
T-storms
Wednesday Night
Low: 51 °F
Mostly Clear
Thursday
High: 75 °F
Sunny
Thursday Night
Low: 54 °F
Mostly Clear

Detailed Forecast

This Afternoon

Showers and possibly a thunderstorm before 5pm, then showers and thunderstorms likely after 5pm. High near 67. Southwest wind 8 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 90%.

Tonight

Showers and thunderstorms likely before 11pm, then a slight chance of showers after 2am. Mostly cloudy, then gradually becoming mostly clear, with a low around 51. Southeast wind around 7 mph. Chance of precipitation is 60%.

Tuesday

A 30 percent chance of showers and thunderstorms, mainly between 11am and 5pm. Mostly sunny, with a high near 72. Southwest wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 26 mph.

Tuesday Night

A 10 percent chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 51. Southwest wind 11 to 15 mph, with gusts as high as 21 mph.

Wednesday

A 10 percent chance of showers and thunderstorms after 11am. Sunny, with a high near 73. Southwest wind 10 to 15 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 31 mph.

Wednesday Night

Mostly clear, with a low around 51. South wind 10 to 16 mph, with gusts as high as 23 mph.

Thursday

Sunny, with a high near 75. Southwest wind 10 to 15 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 30 mph.

Thursday Night

Mostly clear, with a low around 54. South wind 10 to 14 mph, with gusts as high as 24 mph.

Friday

A slight chance of showers, then a chance of showers and thunderstorms after 11am. Mostly sunny, with a high near 74. Southwest wind 9 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 40%.

Friday Night

A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 54. South wind 6 to 13 mph, with gusts as high as 22 mph.

Saturday

Showers and thunderstorms likely. Partly sunny, with a high near 71. South wind 5 to 8 mph, with gusts as high as 17 mph. Chance of precipitation is 60%.

Saturday Night

A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 53. South wind around 5 mph becoming light and variable after midnight.

Sunday

A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 72. Light and variable wind becoming south around 6 mph in the morning.