Greenville, Illinois Climate
United States
Pop. 6,666 Elev. 190 m / 623 ft
TZ: America/Chicago (UTC-5) ·
Greenville sees warm summers peaking at 88°F (31°C) in July, and frigid winters that bottom out around 19°F (-7°C) in January. Humidity pushes the summer feels-like temperature to around 105°F (41°C). Precipitation occurs on roughly 65 days per year (41.0 in / 1043 mm total), with snow on 5 days and 28 in (717 mm) of annual accumulation. The city averages 133 sunny days per year and around 46 thunderstorm days. Nearby lake water reaches 82°F (28°C) in summer.
| Temperature | 88°F (31°C) high | 19°F (-7°C) low |
| Feels like | 105°F (41°C) high | 13°F (-10°C) low |
| Rain | 65 days | 41.0 in (1043 mm) /yr |
| Snow | 5 days | 28.2 in (717 mm) /yr |
| Sky | 133 sunny | 46 stormy |
| Wind | 2.2 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 (%)
49
Jan 60
Feb 51
Mar 65
Apr 62
May 56
Jun 60
Jul 47
Aug 38
Sep 44
Oct 51
Nov 63
Dec Humidity (%)
66
Jan 64
Feb 52
Mar 61
Apr 63
May 70
Jun 76
Jul 70
Aug 63
Sep 66
Oct 68
Nov 72
Dec Weather Days by Month
Water Temperatures
Cities with Similar Climate
Find similar cities on the map →Nearby Cities
Nearby
Commercial airport 33 mi Scott AFB/Midamerica Airport (BLV)
Ski resort 71 mi Hidden Valley
National park 77 mi Emmett Till and Mamie Till-Mobley National Monument
Hospital 1 mi Holy Family Hospital
Hiking trail 59 mi ADT - Illinois (South) - J - Seg 3
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Monthly Weather Data
↑ See chart| Month | Avg High | Avg Low | Rainfall | Snowfall | Sunny Days |
|---|---|---|---|---|---|
| January | 35°F 1°C | 19°F -7°C | 0.6 in 15 mm | 12.5 in317 mm | 13 |
| February | 43°F 6°C | 27°F -3°C | 0.9 in 23 mm | 6.9 in176 mm | 9 |
| March | 64°F 18°C | 42°F 5°C | 3.0 in 76 mm | 0.5 in13 mm | 15 |
| April | 69°F 21°C | 49°F 10°C | 6.6 in 168 mm | — | 6 |
| May | 75°F 24°C | 57°F 14°C | 5.5 in 139 mm | — | 9 |
| June | 85°F 29°C | 69°F 21°C | 6.2 in 157 mm | — | 8 |
| July | 88°F 31°C | 73°F 23°C | 7.0 in 179 mm | — | 8 |
| August | 84°F 29°C | 65°F 19°C | 1.1 in 27 mm | — | 16 |
| September | 83°F 29°C | 58°F 15°C | 3.2 in 82 mm | — | 17 |
| October | 71°F 22°C | 51°F 11°C | 3.1 in 80 mm | — | 16 |
| November | 56°F 13°C | 39°F 4°C | 3.0 in 75 mm | 4.5 in116 mm | 10 |
| December | 43°F 6°C | 28°F -2°C | 0.8 in 20 mm | 3.8 in96 mm | 6 |
Weather Days by Month
↑ See chart| Month | Sunny Days | Storm Days |
|---|---|---|
| January | 13 | 0 |
| February | 9 | 1 |
| March | 15 | 4 |
| April | 6 | 7 |
| May | 9 | 7 |
| June | 8 | 8 |
| July | 8 | 11 |
| August | 16 | 1 |
| September | 17 | 4 |
| October | 16 | 2 |
| November | 10 | 1 |
| December | 6 | 0 |
Water Temperatures Data
↑ See chart| Month | Lake Avg High |
|---|---|
| January | 33°F 1°C |
| February | 33°F 0°C |
| March | 48°F 9°C |
| April | 58°F 14°C |
| May | 65°F 18°C |
| June | 76°F 24°C |
| July | 82°F 28°C |
| August | 77°F 25°C |
| September | 71°F 22°C |
| October | 62°F 17°C |
| November | 46°F 8°C |
| December | 34°F 1°C |