Walnut, Illinois Climate
United States
Pop. 1,350 Elev. 213 m / 699 ft
TZ: America/Chicago (UTC-5) ·
Walnut is largely arid, with warm summers peaking at 87°F (31°C) in July and cold winters around 16°F (-9°C) in January. Humidity pushes the summer feels-like temperature to 98°F (37°C), while wind chill can drive winter lows to 6°F (-14°C). Precipitation occurs on roughly 48 days per year (29.8 in / 758 mm total), with snow on 4 days and 32 in (810 mm) of annual accumulation. The city averages 128 sunny days per year and around 32 thunderstorm days. Nearby lake water reaches 79°F (26°C) in summer.
| Temperature | 87°F (30°C) high | 16°F (-9°C) low |
| Feels like | 98°F (37°C) high | 6°F (-14°C) low |
| Rain | 48 days | 29.8 in (758 mm) /yr |
| Snow | 4 days | 31.9 in (810 mm) /yr |
| Sky | 128 sunny | 32 stormy |
| Wind | 2.7 mph (1.2 m/s) avg |
Looking for a place with a climate like Walnut? Explore and filter 150,000+ cities worldwide.
Explore on the MapMonthly Climate Chart
Best months to visit: Jun, Sep, Oct
Sky & Air by Month
Cloud cover (%)
51
Jan 61
Feb 52
Mar 68
Apr 57
May 52
Jun 62
Jul 53
Aug 38
Sep 44
Oct 55
Nov 74
Dec Humidity (%)
61
Jan 66
Feb 58
Mar 59
Apr 58
May 62
Jun 71
Jul 74
Aug 59
Sep 60
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 51 mi Chicago Rockford International Airport (RFD)
Ski resort 67 mi Chestnut Mountain Resort
National park 103 mi Historic Pullman Foundation Exhibit Hall
Hospital 15 mi OSF Saint Clare Medical Center
Hiking trail 22 mi ADT - Illinois - I - Seg 3
Interested in Walnut?
Hotels
Flights
Real Estate
Insurance
Connectivity
Monthly Weather Data
↑ See chart| Month | Avg High | Avg Low | Rainfall | Snowfall | Sunny Days |
|---|---|---|---|---|---|
| January | 31°F 0°C | 16°F -9°C | 1.0 in 26 mm | 3.5 in88 mm | 15 |
| February | 35°F 2°C | 19°F -7°C | 0.1 in 3 mm | 6.2 in156 mm | 8 |
| March | 58°F 14°C | 36°F 2°C | 3.5 in 88 mm | 5.5 in140 mm | 11 |
| April | 64°F 18°C | 44°F 7°C | 3.7 in 94 mm | — | 6 |
| May | 72°F 22°C | 52°F 11°C | 3.7 in 94 mm | — | 10 |
| June | 86°F 30°C | 66°F 19°C | 2.8 in 72 mm | — | 10 |
| July | 87°F 30°C | 70°F 21°C | 5.4 in 137 mm | — | 7 |
| August | 81°F 27°C | 63°F 17°C | 3.4 in 86 mm | — | 14 |
| September | 81°F 27°C | 57°F 14°C | 1.3 in 34 mm | — | 19 |
| October | 70°F 21°C | 50°F 10°C | 1.9 in 47 mm | — | 14 |
| November | 51°F 11°C | 35°F 2°C | 1.2 in 30 mm | 9.7 in246 mm | 10 |
| December | 35°F 1°C | 19°F -7°C | 1.8 in 45 mm | 7.1 in179 mm | 4 |
Weather Days by Month
↑ See chart| Month | Sunny Days | Storm Days |
|---|---|---|
| January | 15 | 1 |
| February | 8 | 0 |
| March | 11 | 4 |
| April | 6 | 3 |
| May | 10 | 4 |
| June | 10 | 3 |
| July | 7 | 7 |
| August | 14 | 3 |
| September | 19 | 4 |
| October | 14 | 1 |
| November | 10 | 1 |
| 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 |