Genoa, Illinois Climate
United States
Pop. 5,196 Elev. 256 m / 840 ft
TZ: America/Chicago (UTC-5) ·
Dry and warm, Genoa sees July highs of 85°F (29°C) and cold January lows of 15°F (-9°C). Humidity pushes the summer feels-like temperature to 94°F (34°C), while wind chill can drive winter lows to 5°F (-15°C). Expect around 46 rainy days annually (32.6 in / 828 mm total), with snow on 5 days and 34 in (865 mm) of annual accumulation. The city averages 116 sunny days per year and around 33 thunderstorm days. Ocean water temperatures reach 74°F (23°C) in summer.
| Temperature | 85°F (29°C) high | 15°F (-10°C) low |
| Feels like | 94°F (34°C) high | 5°F (-15°C) low |
| Rain | 46 days | 32.6 in (828 mm) /yr |
| Snow | 5 days | 34.0 in (865 mm) /yr |
| Sky | 116 sunny | 33 stormy |
| Wind | 2.6 mph (1.1 m/s) avg |
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Explore on the MapMonthly Climate Chart
Best months to visit: Apr, May, Sep, Oct
Sky & Air by Month
Cloud cover (%)
55
Jan 63
Feb 56
Mar 67
Apr 60
May 53
Jun 61
Jul 51
Aug 35
Sep 46
Oct 57
Nov 76
Dec Humidity (%)
60
Jan 67
Feb 58
Mar 59
Apr 61
May 64
Jun 73
Jul 74
Aug 67
Sep 67
Oct 66
Nov 76
Dec Weather Days by Month
Water Temperatures
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Nearby
Commercial airport 22 mi Chicago Rockford International Airport (RFD)
Ski resort 22 mi
National park 62 mi Historic Pullman Foundation Exhibit Hall
Hospital 8 mi Kindred Hospital - Sycamore
Hiking trail 10 mi Nature Loop
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Monthly Weather Data
↑ See chart| Month | Avg High | Avg Low | Rainfall | Snowfall | Sunny Days |
|---|---|---|---|---|---|
| January | 30°F -1°C | 15°F -10°C | 1.1 in 29 mm | 3.0 in77 mm | 13 |
| February | 34°F 1°C | 17°F -8°C | 0.1 in 3 mm | 7.8 in199 mm | 5 |
| March | 56°F 14°C | 34°F 1°C | 3.4 in 87 mm | 5.3 in134 mm | 10 |
| April | 61°F 16°C | 42°F 6°C | 3.4 in 87 mm | 0.0 in1 mm | 4 |
| May | 69°F 21°C | 50°F 10°C | 3.4 in 85 mm | — | 9 |
| June | 84°F 29°C | 64°F 18°C | 4.1 in 103 mm | — | 10 |
| July | 85°F 29°C | 69°F 20°C | 5.1 in 130 mm | — | 6 |
| August | 79°F 26°C | 62°F 17°C | 4.2 in 106 mm | — | 14 |
| September | 78°F 25°C | 56°F 13°C | 3.1 in 78 mm | — | 18 |
| October | 66°F 19°C | 48°F 9°C | 1.7 in 43 mm | — | 13 |
| November | 49°F 10°C | 35°F 1°C | 1.1 in 29 mm | 10.3 in261 mm | 10 |
| December | 33°F 1°C | 19°F -7°C | 1.9 in 48 mm | 7.6 in194 mm | 4 |
Weather Days by Month
↑ See chart| Month | Sunny Days | Storm Days |
|---|---|---|
| January | 13 | 1 |
| February | 5 | 0 |
| March | 10 | 4 |
| April | 4 | 2 |
| May | 9 | 3 |
| June | 10 | 4 |
| July | 6 | 7 |
| August | 14 | 6 |
| September | 18 | 4 |
| October | 13 | 1 |
| November | 10 | 0 |
| December | 4 | 1 |
Water Temperatures Data
↑ See chart| Month | Ocean Avg High | Lake Avg High |
|---|---|---|
| January | 38°F 3°C | 32°F 0°C |
| February | 34°F 1°C | 32°F 0°C |
| March | 36°F 2°C | 36°F 2°C |
| April | 42°F 6°C | 46°F 8°C |
| May | 48°F 9°C | 55°F 13°C |
| June | 66°F 19°C | 67°F 19°C |
| July | 74°F 23°C | 76°F 24°C |
| August | 73°F 23°C | 73°F 23°C |
| September | 69°F 20°C | 65°F 18°C |
| October | 67°F 19°C | 59°F 15°C |
| November | 51°F 11°C | 43°F 6°C |
| December | 43°F 6°C | 32°F 0°C |