Ottumwa, Iowa Climate
United States
Pop. 24,624 Elev. 205 m / 673 ft
TZ: America/Chicago (UTC-5) ·
Ottumwa has a dry climate with warm summers reaching 88°F (31°C) in July and cold winters averaging 15°F (-9°C) in January. Humidity pushes the summer feels-like temperature to 102°F (39°C), while wind chill can drive winter lows to 7°F (-14°C). Rain falls on about 42 days per year (32.2 in / 817 mm total), with snow on 3 days and 27 in (682 mm) of annual accumulation. The city averages 132 sunny days per year and around 33 thunderstorm days.
| Temperature | 88°F (31°C) high | 15°F (-9°C) low |
| Feels like | 102°F (39°C) high | 7°F (-14°C) low |
| Rain | 42 days | 32.2 in (817 mm) /yr |
| Snow | 3 days | 26.9 in (682 mm) /yr |
| Sky | 132 sunny | 33 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, May, Aug, Sep, Oct
Sky & Air by Month
Cloud cover (%)
47
Jan 58
Feb 49
Mar 65
Apr 53
May 49
Jun 60
Jul 47
Aug 47
Sep 46
Oct 50
Nov 68
Dec Humidity (%)
61
Jan 64
Feb 54
Mar 58
Apr 54
May 64
Jun 73
Jul 71
Aug 60
Sep 59
Oct 65
Nov 75
Dec Weather Days by Month
Cities with Similar Climate
Find similar cities on the map →Nearby Cities
Nearby
Commercial airport 64 mi Kirksville Regional Airport (IRK)
Ski resort 70 mi
National park 152 mi Effigy Mounds National Monument
Hospital 1 mi Ottumwa Regional Health Center
Hiking trail 17 mi Lake Trail
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Monthly Weather Data
↑ See chart| Month | Avg High | Avg Low | Rainfall | Snowfall | Sunny Days |
|---|---|---|---|---|---|
| January | 32°F 0°C | 15°F -9°C | 1.2 in 30 mm | 3.3 in85 mm | 12 |
| February | 35°F 2°C | 18°F -8°C | 0.1 in 2 mm | 5.0 in127 mm | 9 |
| March | 61°F 16°C | 36°F 2°C | 2.4 in 60 mm | 3.1 in78 mm | 12 |
| April | 66°F 19°C | 45°F 7°C | 6.5 in 166 mm | — | 5 |
| May | 75°F 24°C | 53°F 12°C | 2.4 in 62 mm | — | 10 |
| June | 86°F 30°C | 66°F 19°C | 5.1 in 129 mm | — | 13 |
| July | 88°F 31°C | 70°F 21°C | 6.9 in 174 mm | — | 9 |
| August | 83°F 28°C | 64°F 18°C | 2.3 in 58 mm | — | 13 |
| September | 83°F 28°C | 59°F 15°C | 1.9 in 50 mm | — | 13 |
| October | 72°F 22°C | 52°F 11°C | 1.9 in 47 mm | — | 16 |
| November | 54°F 12°C | 35°F 2°C | 0.8 in 22 mm | 8.6 in219 mm | 13 |
| December | 37°F 3°C | 20°F -7°C | 0.7 in 17 mm | 6.8 in173 mm | 7 |
Weather Days by Month
↑ See chart| Month | Sunny Days | Storm Days |
|---|---|---|
| January | 12 | 1 |
| February | 9 | 0 |
| March | 12 | 3 |
| April | 5 | 3 |
| May | 10 | 2 |
| June | 13 | 5 |
| July | 9 | 9 |
| August | 13 | 3 |
| September | 13 | 3 |
| October | 16 | 3 |
| November | 13 | 1 |
| December | 7 | 0 |