Heat Persists in the Southwest; Elevated to Critical Fire Weather in the Great Basin; Poor Air Quality in the West

Dangerous heat will persist across the Southwest U.S. through this week, easing by next week. The heat will focus further east in the Great Plains and Mississippi Valley beginning next week. Elevated to locally critical fire weather conditions will persist for the Great Basin today. Poor air quality lingers for the Northwest, Great Basin, Central Rockies into the Plains. Read More >

Hazardous Weather Conditions

Heat Advisory until August 4, 09:00 PM MDT

Current conditions at

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

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

Clear

82°F

28°C

Humidity	34%
Wind Speed	W 8 MPH
Barometer	30.16 in (1021.34 mb)
Dewpoint	52°F (11°C)
Visibility	10.00 mi
Heat Index	81°F (27°C)
Last update	04 Aug 09:35 AM MST

More Information:

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

Extended Forecast for

St. Johns AZ

Heat Advisory August 4, 10:52am until August 4, 09:00pm

Click here for hazard details and duration

Heat Advisory

Heat Advisory August 4, 10:52am until August 4, 09:00pm
NOW until 9:00pm Tue
Heat Advisory
Today
High: 99 °F
Hot
Tonight
Low: 68 °F
Partly Cloudy
Wednesday
High: 97 °F
Hot
Wednesday Night
Low: 67 °F
Partly Cloudy
Thursday
High: 97 °F
Mostly Sunny
then Slight
Chance
T-storms
Thursday Night
Low: 65 °F
Slight Chance
T-storms then
Partly Cloudy
Friday
High: 97 °F
Hot
Friday Night
Low: 65 °F
Partly Cloudy

Detailed Forecast

Today

Sunny and hot, with a high near 99. Northwest wind 10 to 13 mph, with gusts as high as 21 mph.

Tonight

Partly cloudy, with a low around 68. West wind 5 to 14 mph becoming southwest in the evening. Winds could gust as high as 23 mph.

Wednesday

Sunny and hot, with a high near 97. Southwest wind 5 to 13 mph becoming northwest in the afternoon. Winds could gust as high as 21 mph.

Wednesday Night

Partly cloudy, with a low around 67. West wind 11 to 16 mph becoming light and variable after midnight. Winds could gust as high as 25 mph.

Thursday

A 10 percent chance of showers and thunderstorms after noon. Sunny and hot, with a high near 97. Light and variable wind becoming west 5 to 10 mph in the afternoon. Winds could gust as high as 16 mph.

Thursday Night

A 10 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 65. West wind 5 to 13 mph becoming south after midnight. Winds could gust as high as 21 mph.

Friday

Sunny and hot, with a high near 97. Calm wind becoming northwest 5 to 8 mph in the afternoon.

Friday Night

Partly cloudy, with a low around 65. Southwest wind 12 to 17 mph becoming south 6 to 11 mph after midnight. Winds could gust as high as 25 mph.

Saturday

Sunny and hot, with a high near 97. Light and variable wind becoming west 5 to 10 mph in the afternoon. Winds could gust as high as 18 mph.

Saturday Night

A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 66. South wind 6 to 15 mph, with gusts as high as 22 mph.

Sunday

A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 95. South wind 5 to 13 mph becoming west in the afternoon. Winds could gust as high as 23 mph.

Sunday Night

A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 64. Southwest wind 5 to 14 mph, with gusts as high as 24 mph.

Monday

A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 93. South wind 5 to 10 mph becoming west 11 to 16 mph in the afternoon. Winds could gust as high as 29 mph.