Norwalk, Iowa Climate
United States
Pop. 10,135 Elev. 289 m / 948 ft
TZ: America/Chicago (UTC-5) ·
Norwalk is largely arid, with warm summers peaking at 86°F (30°C) in July and cold winters around 14°F (-10°C) in January. Humidity pushes the summer feels-like temperature to 99°F (37°C), while wind chill can drive winter lows to 5°F (-15°C). Precipitation occurs on roughly 42 days per year (35.3 in / 896 mm total), with snow on 4 days and 30 in (764 mm) of annual accumulation. The city averages 142 sunny days per year and around 30 thunderstorm days. Nearby lake water reaches 80°F (27°C) in summer.
| Temperature | 86°F (30°C) high | 14°F (-10°C) low |
| Feels like | 99°F (37°C) high | 5°F (-15°C) low |
| Rain | 42 days | 35.3 in (896 mm) /yr |
| Snow | 4 days | 30.1 in (764 mm) /yr |
| Sky | 142 sunny | 30 stormy |
| Wind | 2.7 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 48
May 49
Jun 58
Jul 47
Aug 46
Sep 47
Oct 52
Nov 66
Dec Humidity (%)
59
Jan 65
Feb 57
Mar 57
Apr 55
May 67
Jun 78
Jul 74
Aug 66
Sep 64
Oct 68
Nov 75
Dec Weather Days by Month
Water Temperatures
Cities with Similar Climate
Find similar cities on the map →Nearby Cities
Nearby
Commercial airport 4 mi Des Moines International Airport (DSM)
Ski resort 11 mi
National park 129 mi Indian Cave State Park
Hospital 8 mi Iowa Methodist Medical Center
Hiking trail 5 mi Gateway Trail
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Monthly Weather Data
↑ See chart| Month | Avg High | Avg Low | Rainfall | Snowfall | Sunny Days |
|---|---|---|---|---|---|
| January | 33°F 0°C | 14°F -10°C | 0.2 in 6 mm | 1.9 in49 mm | 14 |
| February | 34°F 1°C | 16°F -9°C | 0.0 in 0 mm | 5.0 in126 mm | 11 |
| March | 61°F 16°C | 35°F 2°C | 3.0 in 76 mm | 5.7 in146 mm | 14 |
| April | 65°F 18°C | 44°F 7°C | 3.3 in 83 mm | — | 6 |
| May | 73°F 23°C | 52°F 11°C | 4.3 in 110 mm | — | 13 |
| June | 85°F 29°C | 66°F 19°C | 6.2 in 157 mm | — | 13 |
| July | 86°F 30°C | 69°F 21°C | 10.1 in 258 mm | — | 10 |
| August | 82°F 28°C | 64°F 18°C | 2.0 in 51 mm | — | 14 |
| September | 80°F 27°C | 59°F 15°C | 1.6 in 42 mm | — | 14 |
| October | 70°F 21°C | 51°F 10°C | 3.5 in 88 mm | — | 15 |
| November | 52°F 11°C | 34°F 1°C | 0.6 in 16 mm | 10.3 in261 mm | 10 |
| December | 37°F 3°C | 19°F -7°C | 0.4 in 10 mm | 7.2 in182 mm | 8 |
Weather Days by Month
↑ See chart| Month | Sunny Days | Storm Days |
|---|---|---|
| January | 14 | 0 |
| February | 11 | 0 |
| March | 14 | 2 |
| April | 6 | 3 |
| May | 13 | 2 |
| June | 13 | 7 |
| July | 10 | 8 |
| August | 14 | 2 |
| September | 14 | 2 |
| October | 15 | 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 |