Monticello, Iowa Climate
United States
Pop. 3,825 Elev. 256 m / 840 ft
TZ: America/Chicago (UTC-5) ·
Monticello 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 3°F (-16°C). Precipitation occurs on roughly 41 days per year (29.2 in / 742 mm total), with snow on 4 days and 28 in (706 mm) of annual accumulation. The city averages 124 sunny days per year and around 30 thunderstorm days. Nearby lake water reaches 77°F (25°C) in summer.
| Temperature | 83°F (28°C) high | 12°F (-11°C) low |
| Feels like | 92°F (33°C) high | 3°F (-16°C) low |
| Rain | 41 days | 29.2 in (742 mm) /yr |
| Snow | 4 days | 27.8 in (706 mm) /yr |
| Sky | 124 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: Aug, Sep, Oct
Sky & Air by Month
Cloud cover (%)
46
Jan 58
Feb 50
Mar 66
Apr 53
May 53
Jun 60
Jul 53
Aug 46
Sep 44
Oct 56
Nov 74
Dec Humidity (%)
61
Jan 65
Feb 59
Mar 60
Apr 59
May 68
Jun 79
Jul 76
Aug 65
Sep 63
Oct 67
Nov 80
Dec Weather Days by Month
Water Temperatures
Cities with Similar Climate
Find similar cities on the map →Nearby Cities
Nearby
Commercial airport 27 mi Dubuque Regional Airport (DBQ)
Ski resort 27 mi Sundown Mountain Resort
National park 54 mi Pikes Peak State Park
Hospital 10 mi Jones Regional Medical Center
Hiking trail 28 mi Sycamore Loop
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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 | 0.1 in 2 mm | 1.7 in42 mm | 14 |
| February | 31°F 0°C | 15°F -9°C | 0.1 in 2 mm | 6.0 in153 mm | 10 |
| March | 57°F 14°C | 33°F 1°C | 3.1 in 78 mm | 4.1 in105 mm | 12 |
| April | 61°F 16°C | 41°F 5°C | 3.2 in 81 mm | — | 5 |
| May | 71°F 22°C | 50°F 10°C | 3.5 in 88 mm | — | 12 |
| June | 83°F 28°C | 64°F 18°C | 5.3 in 134 mm | — | 10 |
| July | 83°F 28°C | 67°F 20°C | 7.0 in 178 mm | — | 8 |
| August | 79°F 26°C | 62°F 17°C | 2.3 in 59 mm | — | 12 |
| September | 79°F 26°C | 56°F 13°C | 1.3 in 32 mm | — | 14 |
| October | 67°F 20°C | 48°F 9°C | 2.0 in 50 mm | — | 14 |
| November | 49°F 9°C | 33°F 0°C | 0.9 in 22 mm | 9.3 in235 mm | 10 |
| December | 30°F -1°C | 15°F -9°C | 0.6 in 16 mm | 6.8 in172 mm | 3 |
Weather Days by Month
↑ See chart| Month | Sunny Days | Storm Days |
|---|---|---|
| January | 14 | 0 |
| February | 10 | 0 |
| March | 12 | 3 |
| April | 5 | 3 |
| May | 12 | 3 |
| June | 10 | 6 |
| July | 8 | 7 |
| August | 12 | 3 |
| September | 14 | 2 |
| October | 14 | 3 |
| November | 10 | 0 |
| December | 3 | 0 |
Water Temperatures Data
↑ See chart| Month | Lake Avg High |
|---|---|
| January | 32°F 0°C |
| February | 32°F 0°C |
| March | 36°F 2°C |
| April | 48°F 9°C |
| May | 58°F 15°C |
| June | 70°F 21°C |
| July | 77°F 25°C |
| August | 73°F 23°C |
| September | 67°F 19°C |
| October | 58°F 14°C |
| November | 41°F 5°C |
| December | 32°F 0°C |