Bourbonnais, Illinois Climate
United States
Pop. 18,569 Elev. 209 m / 686 ft
TZ: America/Chicago (UTC-5) ·
Bourbonnais is largely arid, with warm summers peaking at 86°F (30°C) in July and cold winters around 16°F (-9°C) in January. Humidity pushes the summer feels-like temperature to 97°F (36°C), while wind chill can drive winter lows to 7°F (-14°C). Precipitation occurs on roughly 43 days per year (34.7 in / 881 mm total), with snow on 4 days and 33 in (847 mm) of annual accumulation. The city averages 115 sunny days per year and around 35 thunderstorm days. Ocean water temperatures reach 77°F (25°C) in summer.
| Temperature | 86°F (30°C) high | 16°F (-9°C) low |
| Feels like | 97°F (36°C) high | 7°F (-14°C) low |
| Rain | 43 days | 34.7 in (881 mm) /yr |
| Snow | 4 days | 33.3 in (847 mm) /yr |
| Sky | 115 sunny | 35 stormy |
| Wind | 2.8 mph (1.2 m/s) avg |
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Explore on the MapMonthly Climate Chart
Best months to visit: Apr, Aug, Sep
Sky & Air by Month
Cloud cover (%)
56
Jan 63
Feb 56
Mar 67
Apr 62
May 55
Jun 64
Jul 52
Aug 35
Sep 46
Oct 57
Nov 75
Dec Humidity (%)
62
Jan 64
Feb 58
Mar 60
Apr 64
May 67
Jun 74
Jul 74
Aug 64
Sep 63
Oct 66
Nov 77
Dec Weather Days by Month
Water Temperatures
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Nearby
Commercial airport 44 mi Chicago Midway International Airport (MDW)
Ski resort 44 mi
National park 34 mi Gaylord Butterfly Preserve
Hospital 2 mi Riverside Medical Center
Hiking trail 26 mi ADT - Illinois - I - Seg 1
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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 | 0.6 in 15 mm | 6.5 in165 mm | 13 |
| February | 37°F 3°C | 22°F -6°C | 0.2 in 6 mm | 6.5 in164 mm | 7 |
| March | 59°F 15°C | 37°F 3°C | 3.8 in 96 mm | 3.4 in86 mm | 11 |
| April | 63°F 17°C | 44°F 7°C | 3.8 in 95 mm | 0.1 in2 mm | 5 |
| May | 70°F 21°C | 51°F 11°C | 4.2 in 106 mm | — | 8 |
| June | 84°F 29°C | 65°F 18°C | 5.7 in 145 mm | — | 10 |
| July | 86°F 30°C | 70°F 21°C | 5.5 in 138 mm | — | 5 |
| August | 81°F 27°C | 64°F 18°C | 2.9 in 73 mm | — | 12 |
| September | 80°F 27°C | 57°F 14°C | 1.3 in 34 mm | — | 18 |
| October | 69°F 20°C | 49°F 10°C | 3.8 in 97 mm | — | 13 |
| November | 51°F 11°C | 36°F 2°C | 1.1 in 29 mm | 9.5 in241 mm | 10 |
| December | 36°F 2°C | 21°F -6°C | 1.8 in 45 mm | 7.4 in188 mm | 3 |
Weather Days by Month
↑ See chart| Month | Sunny Days | Storm Days |
|---|---|---|
| January | 13 | 1 |
| February | 7 | 0 |
| March | 11 | 5 |
| April | 5 | 3 |
| May | 8 | 5 |
| June | 10 | 5 |
| July | 5 | 6 |
| August | 12 | 4 |
| September | 18 | 2 |
| October | 13 | 3 |
| November | 10 | 0 |
| December | 3 | 1 |
Water Temperatures Data
↑ See chart| Month | Ocean Avg High | Lake Avg High |
|---|---|---|
| January | 36°F 2°C | 32°F 0°C |
| February | 33°F 1°C | 32°F 0°C |
| March | 38°F 4°C | 39°F 4°C |
| April | 47°F 8°C | 49°F 9°C |
| May | 54°F 12°C | 57°F 14°C |
| June | 71°F 22°C | 70°F 21°C |
| July | 76°F 25°C | 79°F 26°C |
| August | 77°F 25°C | 75°F 24°C |
| September | 69°F 21°C | 67°F 19°C |
| October | 66°F 19°C | 60°F 15°C |
| November | 53°F 12°C | 44°F 7°C |
| December | 43°F 6°C | 33°F 0°C |