Altamont, Illinois Climate
United States
Pop. 2,308 Elev. 190 m / 623 ft
TZ: America/Chicago (UTC-5) ·
Summers in Altamont 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 58 rainy days annually (39.4 in / 1001 mm total), with snow on 5 days and 28 in (708 mm) of annual accumulation. The city averages 133 sunny days per year and around 41 thunderstorm days. Nearby lake water reaches 82°F (28°C) in summer.
| Temperature | 88°F (31°C) high | 19°F (-7°C) low |
| Feels like | 105°F (40°C) high | 13°F (-11°C) low |
| Rain | 58 days | 39.4 in (1001 mm) /yr |
| Snow | 5 days | 27.9 in (708 mm) /yr |
| Sky | 133 sunny | 41 stormy |
| Wind | 2.3 mph (1.0 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 60
Feb 52
Mar 64
Apr 64
May 58
Jun 59
Jul 44
Aug 34
Sep 44
Oct 52
Nov 64
Dec Humidity (%)
66
Jan 64
Feb 52
Mar 60
Apr 63
May 69
Jun 75
Jul 68
Aug 62
Sep 66
Oct 67
Nov 72
Dec Weather Days by Month
Water Temperatures
Cities with Similar Climate
Find similar cities on the map →Nearby Cities
Nearby
Commercial airport 54 mi Decatur Airport (DEC)
Ski resort 109 mi Hidden Valley
National park 86 mi Emmett Till and Mamie Till-Mobley National Monument
Mountain peak
(5,125 ft) 366 mi Little Haw Knob
Hospital 11 mi Saint Anthony's Memorial Hospital
Hiking trail 54 mi Bluestem Loop
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Monthly Weather Data
↑ See chart| Month | Avg High | Avg Low | Rainfall | Snowfall | Sunny Days |
|---|---|---|---|---|---|
| January | 34°F 1°C | 19°F -7°C | 0.8 in 22 mm | 12.1 in307 mm | 13 |
| February | 43°F 6°C | 27°F -3°C | 1.4 in 36 mm | 5.8 in148 mm | 9 |
| March | 64°F 18°C | 41°F 5°C | 3.2 in 82 mm | 0.5 in12 mm | 15 |
| April | 69°F 21°C | 49°F 9°C | 6.0 in 153 mm | — | 5 |
| May | 74°F 24°C | 57°F 14°C | 4.6 in 116 mm | — | 7 |
| June | 85°F 30°C | 69°F 21°C | 5.8 in 148 mm | — | 9 |
| July | 88°F 31°C | 73°F 23°C | 5.8 in 147 mm | — | 9 |
| August | 84°F 29°C | 65°F 19°C | 0.8 in 21 mm | — | 15 |
| September | 83°F 28°C | 58°F 15°C | 3.3 in 84 mm | — | 18 |
| October | 71°F 22°C | 51°F 10°C | 3.4 in 85 mm | — | 18 |
| November | 56°F 13°C | 38°F 4°C | 3.3 in 85 mm | 4.2 in107 mm | 10 |
| December | 43°F 6°C | 29°F -2°C | 0.9 in 23 mm | 5.3 in134 mm | 5 |
Weather Days by Month
↑ See chart| Month | Sunny Days | Storm Days |
|---|---|---|
| January | 13 | 0 |
| February | 9 | 1 |
| March | 15 | 3 |
| April | 5 | 9 |
| May | 7 | 4 |
| June | 9 | 7 |
| July | 9 | 7 |
| August | 15 | 1 |
| September | 18 | 3 |
| October | 18 | 2 |
| November | 10 | 3 |
| December | 5 | 1 |
Water Temperatures Data
↑ See chart| Month | Lake Avg High |
|---|---|
| January | 33°F 1°C |
| February | 33°F 0°C |
| March | 48°F 9°C |
| April | 58°F 14°C |
| May | 65°F 18°C |
| June | 76°F 24°C |
| July | 82°F 28°C |
| August | 77°F 25°C |
| September | 71°F 22°C |
| October | 62°F 17°C |
| November | 46°F 8°C |
| December | 34°F 1°C |