Marshalltown, Iowa Climate
United States
Pop. 27,620 Elev. 289 m / 948 ft
TZ: America/Chicago (UTC-5) ·
Dry and warm, Marshalltown sees July highs of 84°F (29°C) and cold January lows of 13°F (-11°C). Humidity pushes the summer feels-like temperature to 95°F (35°C), while wind chill can drive winter lows to 3°F (-16°C). Expect around 45 rainy days annually (32.6 in / 829 mm total), with snow on 5 days and 33 in (835 mm) of annual accumulation. The city averages 130 sunny days per year and around 36 thunderstorm days. Nearby lake water reaches 80°F (27°C) in summer.
| Temperature | 84°F (29°C) high | 13°F (-11°C) low |
| Feels like | 95°F (35°C) high | 3°F (-16°C) low |
| Rain | 45 days | 32.6 in (829 mm) /yr |
| Snow | 5 days | 32.9 in (835 mm) /yr |
| Sky | 130 sunny | 36 stormy |
| Wind | 2.7 mph (1.2 m/s) avg |
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Explore on the MapMonthly Climate Chart
Best months to visit: May, Aug, Sep, Oct
Sky & Air by Month
Cloud cover (%)
44
Jan 58
Feb 48
Mar 65
Apr 52
May 51
Jun 59
Jul 51
Aug 47
Sep 45
Oct 55
Nov 70
Dec Humidity (%)
61
Jan 65
Feb 58
Mar 58
Apr 58
May 67
Jun 80
Jul 77
Aug 66
Sep 64
Oct 68
Nov 79
Dec Weather Days by Month
Water Temperatures
Cities with Similar Climate
Find similar cities on the map →Nearby Cities
Nearby
Commercial airport 44 mi Waterloo Regional Airport (ALO)
Ski resort 45 mi
National park 110 mi Effigy Mounds National Monument
Hospital 0 mi Central Iowa Healthcare
Hiking trail 21 mi ADT - Iowa - K - Seg 3
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Monthly Weather Data
↑ See chart| Month | Avg High | Avg Low | Rainfall | Snowfall | Sunny Days |
|---|---|---|---|---|---|
| January | 31°F -1°C | 13°F -11°C | 0.2 in 6 mm | 2.4 in61 mm | 13 |
| February | 32°F 0°C | 15°F -10°C | 0.0 in 0 mm | 5.7 in145 mm | 9 |
| March | 59°F 15°C | 34°F 1°C | 3.9 in 98 mm | 6.7 in169 mm | 13 |
| April | 63°F 17°C | 43°F 6°C | 4.3 in 108 mm | — | 6 |
| May | 72°F 22°C | 51°F 11°C | 2.3 in 58 mm | — | 12 |
| June | 84°F 29°C | 65°F 18°C | 5.2 in 133 mm | — | 12 |
| July | 84°F 29°C | 68°F 20°C | 9.4 in 238 mm | — | 10 |
| August | 80°F 27°C | 63°F 17°C | 1.8 in 45 mm | — | 12 |
| September | 79°F 26°C | 57°F 14°C | 2.1 in 53 mm | — | 14 |
| October | 68°F 20°C | 49°F 9°C | 2.4 in 60 mm | — | 15 |
| November | 50°F 10°C | 33°F 1°C | 0.8 in 20 mm | 10.2 in258 mm | 10 |
| December | 32°F 0°C | 15°F -9°C | 0.4 in 10 mm | 7.9 in201 mm | 4 |
Weather Days by Month
↑ See chart| Month | Sunny Days | Storm Days |
|---|---|---|
| January | 13 | 1 |
| February | 9 | 0 |
| March | 13 | 4 |
| April | 6 | 4 |
| May | 12 | 2 |
| June | 12 | 7 |
| July | 10 | 9 |
| August | 12 | 2 |
| September | 14 | 4 |
| October | 15 | 2 |
| November | 10 | 1 |
| December | 4 | 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 |