Fairfield, Illinois Climate
United States
Pop. 5,040 Elev. 134 m / 440 ft
TZ: America/Chicago (UTC-5) ·
Fairfield sees warm summers peaking at 90°F (32°C) in July, and frigid winters that bottom out around 20°F (-7°C) in January. Humidity pushes the summer feels-like temperature to around 107°F (42°C). Precipitation occurs on roughly 67 days per year (42.4 in / 1078 mm total), with snow on 4 days and 23 in (591 mm) of annual accumulation. The city averages 122 sunny days per year and around 46 thunderstorm days. Nearby lake water reaches 83°F (28°C) in summer.
| Temperature | 90°F (32°C) high | 20°F (-7°C) low |
| Feels like | 107°F (42°C) high | 15°F (-10°C) low |
| Rain | 67 days | 42.4 in (1078 mm) /yr |
| Snow | 4 days | 23.3 in (591 mm) /yr |
| Sky | 122 sunny | 46 stormy |
| Wind | 2.3 mph (1.0 m/s) avg |
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Explore on the MapMonthly Climate Chart
Best months to visit: Mar, Aug, Sep, Oct
Sky & Air by Month
Cloud cover (%)
48
Jan 61
Feb 53
Mar 63
Apr 66
May 57
Jun 57
Jul 43
Aug 36
Sep 44
Oct 52
Nov 63
Dec Humidity (%)
66
Jan 67
Feb 52
Mar 61
Apr 63
May 67
Jun 73
Jul 66
Aug 61
Sep 67
Oct 67
Nov 70
Dec Weather Days by Month
Water Temperatures
Cities with Similar Climate
Find similar cities on the map →Nearby Cities
Nearby
Commercial airport 51 mi Evansville Regional Airport (EVV)
Ski resort 125 mi Hidden Valley
National park 52 mi Emmett Till and Mamie Till-Mobley National Monument
Mountain peak
(5,125 ft) 319 mi Little Haw Knob
Hospital 1 mi Fairfield Memorial Hospital
Hiking trail 44 mi ADT - Illinois (South) - J - Seg 1
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Monthly Weather Data
↑ See chart| Month | Avg High | Avg Low | Rainfall | Snowfall | Sunny Days |
|---|---|---|---|---|---|
| January | 36°F 2°C | 20°F -7°C | 1.6 in 39 mm | 11.1 in282 mm | 12 |
| February | 45°F 7°C | 28°F -2°C | 3.0 in 77 mm | 6.8 in172 mm | 8 |
| March | 65°F 18°C | 42°F 6°C | 3.7 in 93 mm | 0.3 in7 mm | 10 |
| April | 71°F 21°C | 50°F 10°C | 7.5 in 191 mm | — | 5 |
| May | 75°F 24°C | 58°F 15°C | 4.9 in 125 mm | — | 6 |
| June | 86°F 30°C | 70°F 21°C | 4.6 in 117 mm | — | 9 |
| July | 90°F 32°C | 74°F 23°C | 5.1 in 130 mm | — | 9 |
| August | 85°F 30°C | 66°F 19°C | 0.8 in 21 mm | — | 13 |
| September | 84°F 29°C | 60°F 15°C | 3.3 in 85 mm | — | 17 |
| October | 71°F 22°C | 51°F 11°C | 3.4 in 86 mm | — | 18 |
| November | 57°F 14°C | 40°F 4°C | 3.5 in 88 mm | 1.1 in29 mm | 9 |
| December | 46°F 8°C | 32°F 0°C | 1.0 in 26 mm | 4.0 in101 mm | 6 |
Weather Days by Month
↑ See chart| Month | Sunny Days | Storm Days |
|---|---|---|
| January | 12 | 0 |
| February | 8 | 3 |
| March | 10 | 4 |
| April | 5 | 8 |
| May | 6 | 5 |
| June | 9 | 5 |
| July | 9 | 9 |
| August | 13 | 2 |
| September | 17 | 3 |
| October | 18 | 3 |
| November | 9 | 3 |
| December | 6 | 1 |
Water Temperatures Data
↑ See chart| Month | Lake Avg High |
|---|---|
| January | 34°F 1°C |
| February | 36°F 2°C |
| March | 48°F 9°C |
| April | 59°F 15°C |
| May | 66°F 19°C |
| June | 77°F 25°C |
| July | 83°F 28°C |
| August | 79°F 26°C |
| September | 72°F 22°C |
| October | 64°F 18°C |
| November | 49°F 9°C |
| December | 37°F 3°C |