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	88%
Wind Speed	WNW 0 MPH
Barometer	30.22 in (1023.37 mb)
Dewpoint	50°F (10°C)
Visibility	NA
Last update	31 Aug 04:53 AM 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, 05:03am until September 1, 12:00am

Click here for hazard details and duration

Flood Watch

Flood Watch August 31, 05:03am until September 1, 12:00am
NOW until 12:00am Tue
Flood Watch
Overnight
Low: 63 °F
Chance
Showers
Monday
High: 65 °F
T-storms
Monday Night
Low: 58 °F
Showers
Likely and
Patchy Fog
then Patchy
Fog
Tuesday
High: 77 °F
Chance
T-storms and
Patchy Fog
Tuesday Night
Low: 59 °F
Mostly Clear
Wednesday
High: 78 °F
Slight Chance
T-storms
Wednesday Night
Low: 59 °F
Mostly Clear
Thursday
High: 80 °F
Sunny

Detailed Forecast

Overnight

A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 63. South wind around 6 mph.

Monday

A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 11am. Steady temperature around 65. Southeast wind 6 to 8 mph becoming northeast in the afternoon. Chance of precipitation is 90%.

Monday Night

Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 11pm. Patchy fog between 11pm and 5am. Otherwise, mostly cloudy, then gradually becoming mostly clear, with a low around 58. Southwest wind around 7 mph becoming southeast after midnight. Chance of precipitation is 60%.

Tuesday

A 40 percent chance of showers and thunderstorms after 11am. Patchy fog between 8am and 11am. Otherwise, mostly sunny, with a high near 77. Southeast wind 6 to 16 mph becoming west in the afternoon. Winds could gust as high as 22 mph.

Tuesday Night

Mostly clear, with a low around 59. South wind 10 to 13 mph, with gusts as high as 18 mph.

Wednesday

A 10 percent chance of showers and thunderstorms after 11am. Sunny, with a high near 78. Southwest wind 10 to 18 mph, with gusts as high as 25 mph.

Wednesday Night

Mostly clear, with a low around 59. South wind 9 to 14 mph, with gusts as high as 20 mph.

Thursday

Sunny, with a high near 80. Southwest wind 8 to 16 mph, with gusts as high as 23 mph.

Thursday Night

Mostly clear, with a low around 61. South wind 7 to 11 mph, with gusts as high as 20 mph.

Friday

A 30 percent chance of showers and thunderstorms after 11am. Mostly sunny, with a high near 80. Southwest wind 6 to 14 mph, with gusts as high as 20 mph.

Friday Night

A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 62. Southwest wind 5 to 9 mph becoming light south after midnight. Winds could gust as high as 15 mph.

Saturday

A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 78. Calm wind becoming southwest around 6 mph in the afternoon.

Saturday Night

A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 63. Southwest wind around 5 mph becoming calm in the evening.

Sunday

A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 81. Light and variable wind becoming southeast around 6 mph in the morning.