Heavy Rain and Flash Flooding in the West; Heat Expands in the Central U.S.

Monsoonal moisture will produce showers and thunderstorms with heavy rain over parts of the Southwest, Great Basin, and Central Rockies through Monday. Flash flooding is possible, especially in and around burn scars and in areas of steep terrain. Heat will persist across the Central U.S. early this week, spreading into the Ohio Valley and Mid-Atlantic later this week. Read More >

Hazardous Weather Conditions

Flood Watch until September 1, 01:00 AM MDT

Current conditions at

St. Johns, St. Johns Industrial Airpark (KSJN)

Lat: 34.51833°NLon: 109.37917°WElev: 5732.0ft.

Thunderstorm

66°F

19°C

Humidity	72%
Wind Speed	SE 17 MPH
Barometer	30.15 in (1021.0 mb)
Dewpoint	57°F (14°C)
Visibility	3.00 mi
Last update	30 Aug 04:25 PM MST

More Information:

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

Extended Forecast for

5 Miles SSW St. Johns AZ

Flood Watch August 30, 05:44pm until September 1, 01:00am

Click here for hazard details and duration

Flood Watch

Flood Watch August 30, 05:44pm until September 1, 01:00am
NOW until 1:00am Tue
Flood Watch
This Afternoon
High: 76 °F
Chance
T-storms
Tonight
Low: 58 °F
Chance
T-storms then
Chance
Showers
Monday
High: 77 °F
Showers
Likely and
Patchy Fog
then T-storms
Likely
Monday Night
Low: 54 °F
Slight Chance
T-storms then
Patchy Fog
Tuesday
High: 83 °F
Mostly Sunny
Tuesday Night
Low: 57 °F
Mostly Clear
Wednesday
High: 85 °F
Sunny
Wednesday Night
Low: 57 °F
Mostly Clear

Detailed Forecast

This Afternoon

A 50 percent chance of showers and thunderstorms. Partly sunny, with a steady temperature around 76. South wind around 11 mph, with gusts as high as 18 mph.

Tonight

A 50 percent chance of showers and thunderstorms, mainly after 3am. Mostly cloudy, with a low around 58. South wind 6 to 11 mph becoming light. Winds could gust as high as 18 mph.

Monday

Showers likely and possibly a thunderstorm before noon, then showers and thunderstorms likely, mainly after 3pm. Patchy fog between 9am and noon. Otherwise, cloudy, with a high near 77. East wind 5 to 9 mph becoming west in the morning. Winds could gust as high as 17 mph. Chance of precipitation is 60%.

Monday Night

A 20 percent chance of showers and thunderstorms before midnight. Patchy fog after 3am. Otherwise, mostly cloudy, then gradually becoming mostly clear, with a low around 54. Northwest wind 5 to 9 mph becoming light and variable after midnight. Winds could gust as high as 16 mph.

Tuesday

Mostly sunny, with a high near 83. South wind 5 to 9 mph becoming northwest in the afternoon. Winds could gust as high as 17 mph.

Tuesday Night

Mostly clear, with a low around 57. Northwest wind 6 to 9 mph becoming south after midnight. Winds could gust as high as 16 mph.

Wednesday

Sunny, with a high near 85. Light and variable wind becoming northwest 5 to 10 mph in the afternoon. Winds could gust as high as 17 mph.

Wednesday Night

Mostly clear, with a low around 57. Northwest wind 5 to 10 mph becoming light and variable after midnight.

Thursday

Sunny, with a high near 88. Light and variable wind becoming northwest 5 to 8 mph in the afternoon.

Thursday Night

Mostly cloudy, with a low around 59. Northwest wind 5 to 8 mph becoming light and variable after midnight.

Friday

A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 87. Light and variable wind becoming west 5 to 8 mph in the morning.

Friday Night

A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 59. West wind 5 to 8 mph becoming light and variable after midnight.

Saturday

A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 88. Calm wind becoming west 5 to 8 mph in the afternoon.

Saturday Night

A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 59. Southwest wind 5 to 10 mph becoming south after midnight.

Sunday

A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89.