Flood Watch FLOOD WATCH - Poweshiek County

Regional Infrared Satellite Grinnell Weather Webcam
Updated: @ 13-Aug-2026 4:10pm - next update at 12:00am  
Summary / Temperature Wind Rain Outlook
Sunny, Dry Sunny, Dry
Currently: 79.0°F, Max: 79.2°F, Min: 69.4°F 79°F
Warmer 1.1°F than last hour.

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Feels like: 82.2°F

24-hr difference
-1.3°FColder 1.3°F than yesterday at this time.
  Today Yesterday
High: 79.2°F
3:57pm
82.7°F
4:52pm
Low: 69.4°F
3:14am
70.5°F
11:13am
 Wind from ENE ENE
3.6
Gust:
7 mph
2 Bft - Light Breeze
Today: 38 mph 7:51am
Gust Month: 38.0 mph August 13
Rain Today: 1.19 in
Rain Rate (/hr): 0 in
Rain Yesterday: 0.04 in
Storm Rain: 1.23 in
This Month: 3.55 in
Season Total: 29.28 in
9 rain days in August.
Tonight

Tonight: Showers and thunderstorms likely before 1am, then showers likely and possibly a thunderstorm between 1am and 5am, then a chance of showers and thunderstorms after 5am.  Mostly cloudy, with a low around 66. East northeast wind around 10 mph.  Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.
T-storms
Likely

Humidity & Barometer Almanac Moon
Humidity: 84 % Decreased 3.0% since last hour.
Dew Point: 73.7°F Decreased 0.2°F since last hour.
Barometer: 29.88 inHg Rising 0.01  inHg/hr
Baro Trend: Steady
Sunrise: 6:17am
Sunset: 8:16pm
Moonrise: 7:15am
Moonset: 8:18pm
Waxing Crescent
Waxing Crescent, Moon at 1 days in cycle
2%
Illuminated
UV Index Solar Radiation
   2.8     Low 
High: 5.8 @ 1:32pm
367 W/m2 (50 %)
High: 879 @  1:33pm
 NWS Weather Forecast  - Outlook: This Afternoon & Tonight
This
Afternoon
This Afternoon: A 40 percent chance of showers and thunderstorms.  Partly sunny, with a high near 77. Northeast wind around 5 mph.  New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Chance
T-storms


Hi 77 °F
NWS forecast: A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 77. Northeast wind around 5 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
 
Tonight

Tonight: Showers and thunderstorms likely before 1am, then showers likely and possibly a thunderstorm between 1am and 5am, then a chance of showers and thunderstorms after 5am.  Mostly cloudy, with a low around 66. East northeast wind around 10 mph.  Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.
T-storms
Likely


Lo 66 °F
NWS forecast: Showers and thunderstorms likely before 1am, then showers likely and possibly a thunderstorm between 1am and 5am, then a chance of showers and thunderstorms after 5am. Mostly cloudy, with a low around 66. East northeast wind around 10 mph. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.