Mendota, Illinois Climate
United States
Pop. 7,204 Elev. 229 m / 751 ft
TZ: America/Chicago (UTC-5) ·
Dry and warm, Mendota sees July highs of 87°F (31°C) and cold January lows of 16°F (-9°C). Humidity pushes the summer feels-like temperature to 98°F (37°C), while wind chill can drive winter lows to 6°F (-14°C). Expect around 47 rainy days annually (29.0 in / 738 mm total), with snow on 5 days and 33 in (828 mm) of annual accumulation. The city averages 120 sunny days per year and around 35 thunderstorm days. Nearby lake water reaches 79°F (26°C) in summer.
| Temperature | 87°F (30°C) high | 16°F (-9°C) low |
| Feels like | 98°F (37°C) high | 6°F (-14°C) low |
| Rain | 47 days | 29.0 in (738 mm) /yr |
| Snow | 5 days | 32.6 in (828 mm) /yr |
| Sky | 120 sunny | 35 stormy |
| Wind | 2.7 mph (1.2 m/s) avg |
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Explore on the MapMonthly Climate Chart
Best months to visit: Apr, Sep, Oct
Sky & Air by Month
Cloud cover (%)
53
Jan 61
Feb 53
Mar 67
Apr 59
May 52
Jun 63
Jul 53
Aug 36
Sep 45
Oct 56
Nov 74
Dec Humidity (%)
61
Jan 66
Feb 58
Mar 59
Apr 60
May 64
Jun 72
Jul 74
Aug 62
Sep 61
Oct 65
Nov 77
Dec Weather Days by Month
Water Temperatures
Cities with Similar Climate
Find similar cities on the map →Nearby Cities
Nearby
Commercial airport 45 mi Chicago Rockford International Airport (RFD)
Ski resort 48 mi
National park 79 mi Historic Pullman Foundation Exhibit Hall
Hospital 2 mi OSF Saint Paul Medical Center
Hiking trail 22 mi ADT - Illinois - I - Seg 2
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Monthly Weather Data
↑ See chart| Month | Avg High | Avg Low | Rainfall | Snowfall | Sunny Days |
|---|---|---|---|---|---|
| January | 31°F 0°C | 16°F -9°C | 0.8 in 22 mm | 4.0 in102 mm | 14 |
| February | 36°F 2°C | 19°F -7°C | 0.1 in 3 mm | 6.8 in171 mm | 8 |
| March | 58°F 14°C | 36°F 2°C | 3.2 in 82 mm | 4.9 in123 mm | 12 |
| April | 64°F 18°C | 44°F 6°C | 3.0 in 76 mm | — | 5 |
| May | 72°F 22°C | 51°F 11°C | 3.6 in 92 mm | — | 9 |
| June | 85°F 30°C | 65°F 19°C | 3.3 in 84 mm | — | 10 |
| July | 87°F 30°C | 70°F 21°C | 4.4 in 113 mm | — | 6 |
| August | 81°F 27°C | 63°F 17°C | 4.0 in 102 mm | — | 12 |
| September | 81°F 27°C | 57°F 14°C | 1.4 in 36 mm | — | 19 |
| October | 69°F 20°C | 49°F 10°C | 1.9 in 49 mm | — | 13 |
| November | 51°F 11°C | 36°F 2°C | 1.2 in 30 mm | 9.8 in248 mm | 8 |
| December | 35°F 2°C | 19°F -7°C | 1.9 in 50 mm | 7.2 in183 mm | 4 |
Weather Days by Month
↑ See chart| Month | Sunny Days | Storm Days |
|---|---|---|
| January | 14 | 1 |
| February | 8 | 0 |
| March | 12 | 5 |
| April | 5 | 2 |
| May | 9 | 3 |
| June | 10 | 4 |
| July | 6 | 8 |
| August | 12 | 6 |
| September | 19 | 3 |
| October | 13 | 2 |
| November | 8 | 0 |
| December | 4 | 1 |
Water Temperatures Data
↑ See chart| Month | Lake Avg High |
|---|---|
| January | 32°F 0°C |
| February | 32°F 0°C |
| March | 42°F 6°C |
| April | 53°F 12°C |
| May | 61°F 16°C |
| June | 73°F 23°C |
| July | 79°F 26°C |
| August | 75°F 24°C |
| September | 68°F 20°C |
| October | 59°F 15°C |
| November | 43°F 6°C |
| December | 32°F 0°C |