Flanagan, Illinois Climate
United States
Pop. 1,082 Elev. 207 m / 679 ft
TZ: America/Chicago (UTC-5) ·
Flanagan has a dry climate with warm summers reaching 87°F (31°C) in July and cold winters averaging 17°F (-8°C) in January. Humidity pushes the summer feels-like temperature to 99°F (37°C), while wind chill can drive winter lows to 8°F (-13°C). Rain falls on about 41 days per year (32.7 in / 831 mm total), with snow on 3 days and 30 in (751 mm) of annual accumulation. The city averages 122 sunny days per year and around 32 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 | 99°F (37°C) high | 8°F (-14°C) low |
| Rain | 41 days | 32.7 in (831 mm) /yr |
| Snow | 3 days | 29.6 in (751 mm) /yr |
| Sky | 122 sunny | 32 stormy |
| Wind | 3.0 mph (1.3 m/s) avg |
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Explore on the MapMonthly Climate Chart
Best months to visit: May, Sep, Oct
Sky & Air by Month
Cloud cover (%)
54
Jan 61
Feb 53
Mar 67
Apr 59
May 53
Jun 66
Jul 52
Aug 35
Sep 44
Oct 54
Nov 73
Dec Humidity (%)
62
Jan 64
Feb 56
Mar 58
Apr 59
May 66
Jun 74
Jul 74
Aug 61
Sep 61
Oct 65
Nov 77
Dec Weather Days by Month
Water Temperatures
Cities with Similar Climate
Find similar cities on the map →Nearby Cities
Nearby
Commercial airport 28 mi Central Illinois Regional Airport at Bloomington-Normal (BMI)
Ski resort 77 mi
National park 86 mi Historic Pullman Foundation Exhibit Hall
Hospital 10 mi OSF Saint James - John W. Albrecht Medical Center
Hiking trail 18 mi Spring Lake 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 | 0.6 in 15 mm | 5.5 in139 mm | 14 |
| February | 37°F 3°C | 22°F -6°C | 0.2 in 6 mm | 5.4 in137 mm | 8 |
| March | 60°F 15°C | 38°F 3°C | 3.3 in 85 mm | 3.5 in89 mm | 12 |
| April | 65°F 18°C | 45°F 7°C | 3.6 in 91 mm | 0.0 in0 mm | 4 |
| May | 73°F 23°C | 52°F 11°C | 3.0 in 76 mm | — | 9 |
| June | 85°F 29°C | 66°F 19°C | 4.4 in 111 mm | — | 10 |
| July | 87°F 31°C | 70°F 21°C | 6.6 in 167 mm | — | 6 |
| August | 81°F 27°C | 64°F 18°C | 4.0 in 101 mm | — | 14 |
| September | 82°F 28°C | 57°F 14°C | 1.4 in 37 mm | — | 19 |
| October | 70°F 21°C | 50°F 10°C | 2.9 in 74 mm | — | 13 |
| November | 52°F 11°C | 36°F 2°C | 1.2 in 30 mm | 8.3 in211 mm | 9 |
| December | 37°F 3°C | 21°F -6°C | 1.5 in 38 mm | 6.9 in175 mm | 4 |
Weather Days by Month
↑ See chart| Month | Sunny Days | Storm Days |
|---|---|---|
| January | 14 | 1 |
| February | 8 | 0 |
| March | 12 | 5 |
| April | 4 | 3 |
| May | 9 | 2 |
| June | 10 | 2 |
| July | 6 | 9 |
| August | 14 | 5 |
| September | 19 | 2 |
| October | 13 | 2 |
| November | 9 | 0 |
| December | 4 | 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 |