Weather Alert
Grimes Weather Warning NWS WEATHER ALERT FOR THE GRIMES, IA AREA - Issued: 436 AM CDT Wed Sep 16 2026 Grimes Weather Warning

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Grimes, IA Weather - Hour by Hour Forecast

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Grimes, IA Weather - Hour by Hour Forecast

24 Hour Forecast

Current Conditions - Overcast. Temperature is 63°F17°C, dew point 57°F14°C, humidity 80%. Wind direction is E at 10 mph16 km/h with visibility of 10 mi16 km. Barometric pressure is 30.27 in1025 mb.
Today - Mostly cloudy. A chance of showers and thunderstorms, mainly this morning. Some thunderstorms May produce heavy rainfall this morn.. Full Forecast
Tonight - Mostly cloudy with a chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. Humid with l.. Full Forecast

Grimes Hourly Weather

24 Hour Forecast Scroll
Wed, Sep 16
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Grimes, IA Hourly Weather - Cloudy - 9:00 AM Grimes, IA Hourly Weather - Cloudy - 10:00 AM Grimes, IA Hourly Weather - Cloudy - 11:00 AM Grimes, IA Hourly Weather - Cloudy - 12:00 PM Grimes, IA Hourly Weather - Cloudy - 1:00 PM Grimes, IA Hourly Weather - Cloudy - 2:00 PM Grimes, IA Hourly Weather - Cloudy - 3:00 PM Grimes, IA Hourly Weather - Cloudy - 4:00 PM Grimes, IA Hourly Weather - Cloudy - 5:00 PM Grimes, IA Hourly Weather - Cloudy - 6:00 PM Grimes, IA Hourly Weather - Cloudy - 7:00 PM Grimes, IA Hourly Weather - Cloudy - 8:00 PM Grimes, IA Hourly Weather - Cloudy - 9:00 PM Grimes, IA Hourly Weather - Cloudy - 10:00 PM Grimes, IA Hourly Weather - Cloudy - 11:00 PM Grimes, IA Hourly Weather - Cloudy - 12:00 AM Grimes, IA Hourly Weather - Cloudy - 1:00 AM Grimes, IA Hourly Weather - Cloudy - 2:00 AM Grimes, IA Hourly Weather - Cloudy - 3:00 AM Grimes, IA Hourly Weather - Cloudy - 4:00 AM Grimes, IA Hourly Weather - Cloudy - 5:00 AM Grimes, IA Hourly Weather - Cloudy - 6:00 AM Grimes, IA Hourly Weather - Cloudy - 7:00 AM Grimes, IA Hourly Weather - Cloudy - 8:00 AM
Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy
64°F18°C 65°F18°C 67°F19°C 68°F20°C 70°F21°C 70°F21°C 71°F22°C 71°F22°C 71°F22°C 71°F22°C 71°F22°C 70°F21°C 70°F21°C 69°F21°C 69°F21°C 69°F21°C 69°F21°C 69°F21°C 69°F21°C 69°F21°C 69°F21°C 68°F20°C 68°F20°C 69°F21°C
Rain Rain Rain Rain Rain Rain Rain Rain Rain Rain Rain Rain Rain Rain Rain Rain Rain Rain Rain Rain Rain Rain Rain Rain
53% 53% 53% 53% 53% 35% 35% 35% 35% 35% 35% 48% 48% 48% 48% 48% 48% 68% 68% 68% 68% 68% 68% 51%
58°F14°C 59°F15°C 60°F16°C 60°F16°C 61°F16°C 62°F17°C 63°F17°C 64°F18°C 65°F18°C 66°F19°C 67°F19°C 67°F19°C 68°F20°C 68°F20°C 68°F20°C 69°F21°C 69°F21°C 69°F21°C 69°F21°C 69°F21°C 69°F21°C 68°F20°C 68°F20°C 69°F21°C
81% 81% 78% 76% 73% 76% 76% 79% 81% 84% 87% 90% 93% 97% 97% 100% 100% 100% 100% 100% 100% 100% 100% 100%
E E E E ESE SE SE SE SE E E E E E E E ESE SE SE SE SSE S SW SSW
7 mph 7 mph 7 mph 7 mph 7 mph 7 mph 6 mph 6 mph 6 mph 5 mph 5 mph 5 mph 5 mph 5 mph 5 mph 3 mph 3 mph 3 mph 3 mph 3 mph 3 mph 4 mph 4 mph 4 mph
10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 6 mi10 km 6 mi10 km 5 mi8 km 5 mi8 km 5 mi8 km 5 mi8 km 5 mi8 km 5 mi8 km 5 mi8 km 3 mi5 km .75 mi1 km .5 mi1 km .5 mi1 km .75 mi1 km .75 mi1 km .75 mi1 km 3 mi5 km 3 mi5 km 5 mi8 km
Hour (CDT)
Weather
Clouds
Temperature
Precip. Type
POP
Dewpoint
Humidity
Wind Direction
Wind Speed
Visibility
POP = Probability of Precipitation. ** Indicates missing data/values from KDSM model statistics.

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Prob Precip % = Probability of Precipitation.

Grimes 36 Hour Forecast

POP = Probability of Precipitation. ** Indicates missing data/values from model statistics.

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