Roanoke, Illinois Climate
United States
Pop. 2,073 Elev. 221 m / 725 ft
TZ: America/Chicago (UTC-5) ·
Roanoke is largely arid, with warm summers peaking at 87°F (31°C) in July and cold winters around 17°F (-8°C) in January. Humidity pushes the summer feels-like temperature to 100°F (38°C), while wind chill can drive winter lows to 9°F (-13°C). Precipitation occurs on roughly 43 days per year (29.8 in / 756 mm total), with snow on 3 days and 29 in (744 mm) of annual accumulation. The city averages 125 sunny days per year and around 30 thunderstorm days. Nearby lake water reaches 79°F (26°C) in summer.
| Temperature | 87°F (31°C) high | 17°F (-8°C) low |
| Feels like | 100°F (38°C) high | 9°F (-13°C) low |
| Rain | 43 days | 29.8 in (756 mm) /yr |
| Snow | 3 days | 29.3 in (744 mm) /yr |
| Sky | 125 sunny | 30 stormy |
| Wind | 2.8 mph (1.3 m/s) avg |
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Explore on the MapMonthly Climate Chart
Best months to visit: Aug, Sep, Oct
Sky & Air by Month
Cloud cover (%)
53
Jan 60
Feb 52
Mar 67
Apr 58
May 52
Jun 68
Jul 51
Aug 36
Sep 45
Oct 52
Nov 71
Dec Humidity (%)
63
Jan 65
Feb 57
Mar 60
Apr 59
May 67
Jun 73
Jul 73
Aug 59
Sep 60
Oct 66
Nov 78
Dec Weather Days by Month
Water Temperatures
Cities with Similar Climate
Find similar cities on the map →Nearby Cities
Nearby
Commercial airport 27 mi Central Illinois Regional Airport at Bloomington-Normal (BMI)
Ski resort 90 mi
National park 103 mi Historic Pullman Foundation Exhibit Hall
Hospital 7 mi Carle Eureka Hospital
Hiking trail 16 mi Meadow Valley Park
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Monthly Weather Data
↑ See chart| Month | Avg High | Avg Low | Rainfall | Snowfall | Sunny Days |
|---|---|---|---|---|---|
| January | 32°F 0°C | 17°F -8°C | 0.5 in 12 mm | 5.4 in137 mm | 15 |
| February | 38°F 3°C | 22°F -6°C | 0.3 in 7 mm | 5.0 in126 mm | 8 |
| March | 60°F 15°C | 38°F 3°C | 3.4 in 86 mm | 4.0 in101 mm | 12 |
| April | 65°F 19°C | 45°F 7°C | 3.6 in 91 mm | — | 5 |
| May | 73°F 23°C | 53°F 12°C | 3.4 in 85 mm | — | 10 |
| June | 85°F 29°C | 66°F 19°C | 4.2 in 108 mm | — | 9 |
| July | 87°F 31°C | 71°F 22°C | 5.2 in 131 mm | — | 5 |
| August | 82°F 28°C | 64°F 18°C | 2.9 in 73 mm | — | 13 |
| September | 82°F 28°C | 57°F 14°C | 1.3 in 34 mm | — | 19 |
| October | 70°F 21°C | 50°F 10°C | 2.4 in 61 mm | — | 13 |
| November | 52°F 11°C | 36°F 2°C | 1.4 in 35 mm | 7.8 in198 mm | 10 |
| December | 37°F 3°C | 21°F -6°C | 1.3 in 34 mm | 7.2 in182 mm | 6 |
Weather Days by Month
↑ See chart| Month | Sunny Days | Storm Days |
|---|---|---|
| January | 15 | 1 |
| February | 8 | 0 |
| March | 12 | 4 |
| April | 5 | 4 |
| May | 10 | 2 |
| June | 9 | 2 |
| July | 5 | 6 |
| August | 13 | 5 |
| September | 19 | 2 |
| October | 13 | 2 |
| November | 10 | 1 |
| December | 6 | 1 |
Water Temperatures Data
↑ See chart| Month | Lake Avg High |
|---|---|
| January | 32°F 0°C |
| February | 32°F 0°C |
| March | 42°F 6°C |
| April | 53°F 12°C |
| May | 61°F 16°C |
| June | 73°F 23°C |
| July | 79°F 26°C |
| August | 75°F 24°C |
| September | 68°F 20°C |
| October | 59°F 15°C |
| November | 43°F 6°C |
| December | 32°F 0°C |