Brighton, Illinois Climate
United States
Pop. 2,198 Elev. 204 m / 669 ft
TZ: America/Chicago (UTC-5) ·
Summers in Brighton are warm, with July highs around 88°F (31°C), while winters are frigid with January lows of 19°F (-7°C). Humidity pushes the summer feels-like temperature to around 105°F (41°C). Expect around 61 rainy days annually (37.2 in / 944 mm total), with snow on 5 days and 29 in (735 mm) of annual accumulation. The city averages 128 sunny days per year and around 46 thunderstorm days. Nearby lake water reaches 83°F (28°C) in summer.
| Temperature | 88°F (31°C) high | 19°F (-7°C) low |
| Feels like | 105°F (41°C) high | 13°F (-10°C) low |
| Rain | 61 days | 37.2 in (944 mm) /yr |
| Snow | 5 days | 28.9 in (735 mm) /yr |
| Sky | 128 sunny | 46 stormy |
| Wind | 2.1 mph (0.9 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 (%)
49
Jan 59
Feb 51
Mar 67
Apr 61
May 55
Jun 60
Jul 47
Aug 42
Sep 45
Oct 51
Nov 61
Dec Humidity (%)
67
Jan 65
Feb 53
Mar 62
Apr 65
May 73
Jun 78
Jul 71
Aug 64
Sep 67
Oct 68
Nov 73
Dec Weather Days by Month
Water Temperatures
Cities with Similar Climate
Find similar cities on the map →Nearby Cities
Nearby
Commercial airport 24 mi St. Louis Lambert International Airport (STL)
Ski resort 44 mi Hidden Valley
National park 104 mi Emmett Till and Mamie Till-Mobley National Monument
Hospital 9 mi Alton Mental Health Center
Hiking trail 27 mi ADT - Missouri - L - Seg 1
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Monthly Weather Data
↑ See chart| Month | Avg High | Avg Low | Rainfall | Snowfall | Sunny Days |
|---|---|---|---|---|---|
| January | 35°F 2°C | 19°F -7°C | 0.5 in 13 mm | 13.2 in336 mm | 13 |
| February | 42°F 6°C | 26°F -3°C | 0.7 in 18 mm | 6.5 in166 mm | 9 |
| March | 65°F 18°C | 42°F 5°C | 3.0 in 76 mm | 0.5 in13 mm | 14 |
| April | 69°F 21°C | 49°F 10°C | 6.0 in 153 mm | — | 5 |
| May | 74°F 24°C | 57°F 14°C | 4.7 in 120 mm | — | 9 |
| June | 85°F 29°C | 69°F 21°C | 6.4 in 162 mm | — | 10 |
| July | 88°F 31°C | 74°F 23°C | 6.4 in 162 mm | — | 7 |
| August | 84°F 29°C | 66°F 19°C | 1.0 in 24 mm | — | 14 |
| September | 83°F 28°C | 59°F 15°C | 2.5 in 65 mm | — | 15 |
| October | 71°F 22°C | 52°F 11°C | 2.9 in 74 mm | — | 16 |
| November | 56°F 14°C | 39°F 4°C | 2.4 in 60 mm | 6.0 in153 mm | 10 |
| December | 44°F 6°C | 28°F -2°C | 0.6 in 16 mm | 2.7 in68 mm | 6 |
Weather Days by Month
↑ See chart| Month | Sunny Days | Storm Days |
|---|---|---|
| January | 13 | 0 |
| February | 9 | 0 |
| March | 14 | 5 |
| April | 5 | 9 |
| May | 9 | 4 |
| June | 10 | 8 |
| July | 7 | 12 |
| August | 14 | 1 |
| September | 15 | 3 |
| October | 16 | 2 |
| November | 10 | 2 |
| December | 6 | 0 |
Water Temperatures Data
↑ See chart| Month | Lake Avg High |
|---|---|
| January | 33°F 0°C |
| February | 32°F 0°C |
| March | 49°F 9°C |
| April | 58°F 15°C |
| May | 65°F 18°C |
| June | 77°F 25°C |
| July | 83°F 28°C |
| August | 77°F 25°C |
| September | 72°F 22°C |
| October | 62°F 17°C |
| November | 46°F 8°C |
| December | 34°F 1°C |