Waterloo, Iowa Climate
United States
Pop. 68,460 Elev. 263 m / 863 ft
TZ: America/Chicago (UTC-5) ·
Waterloo is largely arid, with warm summers peaking at 83°F (28°C) in July and cold winters around 12°F (-11°C) in January. Humidity pushes the summer feels-like temperature to 92°F (33°C), while wind chill can drive winter lows to 2°F (-17°C). Precipitation occurs on roughly 45 days per year (33.4 in / 849 mm total), with snow on 5 days and 30 in (768 mm) of annual accumulation. The city averages 121 sunny days per year and around 33 thunderstorm days.
| Temperature | 83°F (29°C) high | 12°F (-11°C) low |
| Feels like | 92°F (33°C) high | 2°F (-17°C) low |
| Rain | 45 days | 33.4 in (849 mm) /yr |
| Snow | 5 days | 30.2 in (768 mm) /yr |
| Sky | 121 sunny | 33 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 (%)
46
Jan 58
Feb 49
Mar 65
Apr 51
May 54
Jun 58
Jul 53
Aug 47
Sep 44
Oct 57
Nov 73
Dec Humidity (%)
61
Jan 66
Feb 58
Mar 59
Apr 57
May 68
Jun 80
Jul 78
Aug 68
Sep 63
Oct 68
Nov 81
Dec Weather Days by Month
Cities with Similar Climate
Find similar cities on the map →Nearby Cities
Nearby
Commercial airport 5 mi Waterloo Regional Airport (ALO)
Ski resort 87 mi
National park 69 mi Effigy Mounds National Monument
Mountain peak
(20,733 ft) 365 mi Norris Hill
Hospital 2 mi MercyOne Waterloo Medical Center
Hiking trail 22 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 | 30°F -1°C | 12°F -11°C | 0.0 in 1 mm | 1.4 in36 mm | 14 |
| February | 30°F -1°C | 14°F -10°C | 0.0 in 1 mm | 6.0 in152 mm | 9 |
| March | 57°F 14°C | 33°F 0°C | 3.5 in 88 mm | 6.4 in164 mm | 12 |
| April | 62°F 17°C | 41°F 5°C | 5.6 in 143 mm | 0.1 in1 mm | 5 |
| May | 71°F 22°C | 51°F 10°C | 2.4 in 60 mm | — | 13 |
| June | 83°F 28°C | 64°F 18°C | 5.7 in 145 mm | — | 11 |
| July | 83°F 29°C | 67°F 19°C | 9.4 in 239 mm | — | 8 |
| August | 79°F 26°C | 62°F 17°C | 2.1 in 53 mm | — | 10 |
| September | 79°F 26°C | 56°F 14°C | 1.4 in 36 mm | — | 15 |
| October | 67°F 19°C | 48°F 9°C | 2.0 in 52 mm | — | 13 |
| November | 49°F 9°C | 32°F 0°C | 0.8 in 19 mm | 8.5 in216 mm | 8 |
| December | 29°F -2°C | 14°F -10°C | 0.5 in 13 mm | 7.8 in199 mm | 3 |
Weather Days by Month
↑ See chart| Month | Sunny Days | Storm Days |
|---|---|---|
| January | 14 | 0 |
| February | 9 | 0 |
| March | 12 | 3 |
| April | 5 | 6 |
| May | 13 | 1 |
| June | 11 | 8 |
| July | 8 | 9 |
| August | 10 | 2 |
| September | 15 | 1 |
| October | 13 | 3 |
| November | 8 | 0 |
| December | 3 | 0 |