Grimes, Iowa Climate
United States
Pop. 10,676 Elev. 289 m / 948 ft
TZ: America/Chicago (UTC-5) ·
Grimes has a dry climate with warm summers reaching 85°F (29°C) in July and cold winters averaging 14°F (-10°C) in January. Humidity pushes the summer feels-like temperature to 97°F (36°C), while wind chill can drive winter lows to 4°F (-16°C). Rain falls on about 43 days per year (35.1 in / 892 mm total), with snow on 4 days and 34 in (867 mm) of annual accumulation. The city averages 141 sunny days per year and around 32 thunderstorm days. Nearby lake water reaches 80°F (27°C) in summer.
| Temperature | 85°F (30°C) high | 14°F (-10°C) low |
| Feels like | 97°F (36°C) high | 4°F (-15°C) low |
| Rain | 43 days | 35.1 in (892 mm) /yr |
| Snow | 4 days | 34.1 in (867 mm) /yr |
| Sky | 141 sunny | 32 stormy |
| Wind | 2.6 mph (1.2 m/s) avg |
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Explore on the MapMonthly Climate Chart
Best months to visit: Mar, Apr, Aug, Sep, Oct
Sky & Air by Month
Cloud cover (%)
44
Jan 57
Feb 48
Mar 63
Apr 49
May 50
Jun 58
Jul 48
Aug 46
Sep 47
Oct 54
Nov 67
Dec Humidity (%)
60
Jan 65
Feb 58
Mar 57
Apr 55
May 67
Jun 78
Jul 75
Aug 67
Sep 64
Oct 69
Nov 77
Dec Weather Days by Month
Water Temperatures
Cities with Similar Climate
Find similar cities on the map →Nearby Cities
Nearby
Commercial airport 13 mi Des Moines International Airport (DSM)
Ski resort 15 mi
National park 116 mi Fort Atkinson State Historical Park
Hospital 6 mi MercyOne Clive Rehabilitation Hospital
Hiking trail 6 mi Lakeshore Trail
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Monthly Weather Data
↑ See chart| Month | Avg High | Avg Low | Rainfall | Snowfall | Sunny Days |
|---|---|---|---|---|---|
| January | 32°F 0°C | 14°F -10°C | 0.2 in 6 mm | 1.9 in49 mm | 15 |
| February | 33°F 0°C | 15°F -9°C | 0.0 in 1 mm | 5.1 in129 mm | 10 |
| March | 61°F 16°C | 35°F 1°C | 3.4 in 86 mm | 7.3 in186 mm | 15 |
| April | 65°F 18°C | 44°F 6°C | 3.3 in 85 mm | — | 5 |
| May | 73°F 23°C | 52°F 11°C | 3.9 in 99 mm | — | 13 |
| June | 84°F 29°C | 65°F 19°C | 6.0 in 153 mm | — | 13 |
| July | 85°F 30°C | 69°F 20°C | 9.7 in 247 mm | — | 12 |
| August | 81°F 27°C | 64°F 18°C | 2.2 in 57 mm | — | 13 |
| September | 80°F 27°C | 58°F 15°C | 1.9 in 47 mm | — | 13 |
| October | 69°F 21°C | 50°F 10°C | 3.4 in 86 mm | — | 14 |
| November | 51°F 11°C | 34°F 1°C | 0.7 in 17 mm | 11.8 in300 mm | 10 |
| December | 35°F 2°C | 17°F -8°C | 0.4 in 9 mm | 8.0 in203 mm | 8 |
Weather Days by Month
↑ See chart| Month | Sunny Days | Storm Days |
|---|---|---|
| January | 15 | 0 |
| February | 10 | 0 |
| March | 15 | 3 |
| April | 5 | 3 |
| May | 13 | 2 |
| June | 13 | 7 |
| July | 12 | 9 |
| August | 13 | 1 |
| September | 13 | 3 |
| October | 14 | 4 |
| November | 10 | 0 |
| December | 8 | 0 |
Water Temperatures Data
↑ See chart| Month | Lake Avg High |
|---|---|
| January | 32°F 0°C |
| February | 32°F 0°C |
| March | 41°F 5°C |
| April | 53°F 12°C |
| May | 62°F 17°C |
| June | 74°F 23°C |
| July | 80°F 27°C |
| August | 76°F 24°C |
| September | 70°F 21°C |
| October | 59°F 15°C |
| November | 43°F 6°C |
| December | 32°F 0°C |