National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Thunderstorms and Heavy Rainfall in the Southeast, Montana, and Iowa; Lowell Begins to Impact Hawaii

Strong thunderstorms with damaging winds and heavy rain are expected across portions of the Southeast. Thunderstorms may produce large hail across portions of Montana. Heavy rainfall could produce flash flooding across Iowa and vulnerable areas in Utah. Lowell will bring heavy rain, dangerous swells and rip currents to portions of Hawaii. Sweltering heat persists across the South-Central US. Read More >

Current conditions at

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

Lat: 34.52°NLon: 109.38°WElev: 5732ft.

Fair

84°F

29°C

Humidity 31%
Wind Speed Vrbl 5 mph
Barometer 30.14 in (1010.2 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 6 Sep 11:54 am MST
Extended Forecast for

Reserve NM

  • This Afternoon

    This Afternoon: A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 90. Southeast wind around 5 mph.

    High: 90 °F

    Chance
    T-storms

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms before 9pm. Mostly cloudy, with a low around 58. Southeast wind around 5 mph becoming calm in the evening.

    Low: 58 °F

    Chance
    T-storms then
    Mostly Cloudy

  • Labor Day

    Labor Day: Showers likely and possibly a thunderstorm between noon and 3pm, then showers and thunderstorms likely after 3pm. Increasing clouds, with a high near 88. Calm wind becoming northwest around 5 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 88 °F

    Mostly Sunny
    then T-storms
    Likely

  • Monday Night

    Monday Night: A 40 percent chance of showers and thunderstorms before 9pm. Mostly cloudy, with a low around 56. Northeast wind around 5 mph becoming calm.

    Low: 56 °F

    Chance
    T-storms then
    Partly Cloudy

  • Tuesday

    Tuesday: Showers likely and possibly a thunderstorm between noon and 3pm, then showers and thunderstorms likely after 3pm. Partly sunny, with a high near 90. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 60%.

    High: 90 °F

    Mostly Sunny
    then T-storms
    Likely

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 58.

    Low: 58 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Wednesday

    Wednesday: Showers and thunderstorms likely after noon. Partly sunny, with a high near 91. Chance of precipitation is 70%.

    High: 91 °F

    Mostly Sunny
    then T-storms
    Likely

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 58.

    Low: 58 °F

    Slight Chance
    T-storms then
    Mostly Cloudy

  • Thursday

    Thursday: Showers and thunderstorms likely after noon. Partly sunny, with a high near 90. Chance of precipitation is 60%.

    High: 90 °F

    Mostly Sunny
    then T-storms
    Likely

Detailed Forecast

This Afternoon
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 90. Southeast wind around 5 mph.
Tonight
A 30 percent chance of showers and thunderstorms before 9pm. Mostly cloudy, with a low around 58. Southeast wind around 5 mph becoming calm in the evening.
Labor Day
Showers likely and possibly a thunderstorm between noon and 3pm, then showers and thunderstorms likely after 3pm. Increasing clouds, with a high near 88. Calm wind becoming northwest around 5 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday Night
A 40 percent chance of showers and thunderstorms before 9pm. Mostly cloudy, with a low around 56. Northeast wind around 5 mph becoming calm.
Tuesday
Showers likely and possibly a thunderstorm between noon and 3pm, then showers and thunderstorms likely after 3pm. Partly sunny, with a high near 90. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 60%.
Tuesday Night
A 20 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 58.
Wednesday
Showers and thunderstorms likely after noon. Partly sunny, with a high near 91. Chance of precipitation is 70%.
Wednesday Night
A 20 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 58.
Thursday
Showers and thunderstorms likely after noon. Partly sunny, with a high near 90. Chance of precipitation is 60%.
Thursday Night
A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 57.
Friday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90.
Friday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 56.
Saturday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 87.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Reserve NM
 33.7°N 108.75°W (Elev. 5797 ft)
Last Update:
12:31 pm MDT Sep 6, 2026
Forecast Valid:
1pm MDT Sep 6, 2026-6pm MDT Sep 12, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation