Saint Joseph, Illinois Climate
United States
Pop. 3,967 Elev. 205 m / 673 ft
TZ: America/Chicago (UTC-5) ·
Saint Joseph is largely arid, with warm summers peaking at 87°F (31°C) in July and cold winters around 16°F (-9°C) in January. Humidity pushes the summer feels-like temperature to 101°F (38°C), while wind chill can drive winter lows to 8°F (-13°C). Precipitation occurs on roughly 47 days per year (27.5 in / 699 mm total), with snow on 6 days and 29 in (741 mm) of annual accumulation. The city averages 127 sunny days per year and around 31 thunderstorm days.
| Temperature | 87°F (31°C) high | 16°F (-9°C) low |
| Feels like | 101°F (38°C) high | 8°F (-14°C) low |
| Rain | 47 days | 27.5 in (699 mm) /yr |
| Snow | 6 days | 29.2 in (741 mm) /yr |
| Sky | 127 sunny | 31 stormy |
| Wind | 2.8 mph (1.3 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 (%)
52
Jan 61
Feb 55
Mar 66
Apr 62
May 60
Jun 62
Jul 46
Aug 33
Sep 44
Oct 51
Nov 70
Dec Humidity (%)
69
Jan 65
Feb 55
Mar 60
Apr 62
May 69
Jun 74
Jul 65
Aug 54
Sep 58
Oct 65
Nov 78
Dec Weather Days by Month
Cities with Similar Climate
Find similar cities on the map →Nearby Cities
Nearby
Commercial airport 13 mi University of Illinois Willard Airport (CMI)
Ski resort 115 mi
National park 78 mi Shakamak State Park
Mountain peak
(4,938 ft) 390 mi Gregory Bald
Hospital 9 mi Carle Foundation Hospital
Hiking trail 19 mi Dark Sky Trail
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Monthly Weather Data
↑ See chart| Month | Avg High | Avg Low | Rainfall | Snowfall | Sunny Days |
|---|---|---|---|---|---|
| January | 32°F 0°C | 16°F -9°C | 0.5 in 12 mm | 8.4 in213 mm | 14 |
| February | 40°F 5°C | 24°F -4°C | 0.5 in 12 mm | 5.8 in146 mm | 7 |
| March | 62°F 16°C | 39°F 4°C | 2.8 in 72 mm | 1.1 in27 mm | 9 |
| April | 66°F 19°C | 46°F 8°C | 4.6 in 117 mm | — | 5 |
| May | 73°F 23°C | 54°F 12°C | 3.2 in 82 mm | — | 9 |
| June | 84°F 29°C | 67°F 20°C | 4.6 in 116 mm | — | 8 |
| July | 87°F 31°C | 72°F 22°C | 4.3 in 110 mm | — | 6 |
| August | 84°F 29°C | 65°F 18°C | 1.0 in 25 mm | — | 16 |
| September | 84°F 29°C | 58°F 14°C | 1.3 in 32 mm | — | 20 |
| October | 71°F 22°C | 50°F 10°C | 2.3 in 59 mm | — | 18 |
| November | 54°F 12°C | 37°F 3°C | 1.3 in 34 mm | 7.1 in181 mm | 11 |
| December | 40°F 4°C | 24°F -5°C | 1.1 in 27 mm | 6.8 in173 mm | 4 |
Weather Days by Month
↑ See chart| Month | Sunny Days | Storm Days |
|---|---|---|
| January | 14 | 0 |
| February | 7 | 0 |
| March | 9 | 3 |
| April | 5 | 4 |
| May | 9 | 4 |
| June | 8 | 7 |
| July | 6 | 8 |
| August | 16 | 1 |
| September | 20 | 1 |
| October | 18 | 1 |
| November | 11 | 1 |
| December | 4 | 1 |