Rockford, Illinois Climate
United States
Pop. 148,278 Elev. 224 m / 735 ft
TZ: America/Chicago (UTC-5) ·
Dry and warm, Rockford sees July highs of 85°F (29°C) and cold January lows of 14°F (-10°C). Humidity pushes the summer feels-like temperature to 94°F (34°C), while wind chill can drive winter lows to 5°F (-15°C). Expect around 41 rainy days annually (30.6 in / 777 mm total), with snow on 6 days and 35 in (890 mm) of annual accumulation. The city averages 118 sunny days per year and around 34 thunderstorm days. Nearby lake water reaches 77°F (25°C) in summer.
| Temperature | 85°F (30°C) high | 14°F (-10°C) low |
| Feels like | 94°F (34°C) high | 5°F (-15°C) low |
| Rain | 41 days | 30.6 in (777 mm) /yr |
| Snow | 6 days | 35.0 in (890 mm) /yr |
| Sky | 118 sunny | 34 stormy |
| Wind | 2.4 mph (1.1 m/s) avg |
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Explore on the MapMonthly Climate Chart
Best months to visit: Apr, May, Sep, Oct
Sky & Air by Month
Cloud cover (%)
54
Jan 63
Feb 56
Mar 67
Apr 59
May 53
Jun 59
Jul 51
Aug 37
Sep 46
Oct 56
Nov 76
Dec Humidity (%)
60
Jan 66
Feb 60
Mar 60
Apr 60
May 63
Jun 71
Jul 72
Aug 68
Sep 67
Oct 67
Nov 75
Dec Weather Days by Month
Water Temperatures
Cities with Similar Climate
Find similar cities on the map →Nearby Cities
Nearby
Commercial airport 5 mi Chicago Rockford International Airport (RFD)
Ski resort 43 mi The Mountain Top at Grand Geneva Resort & Spa
National park 86 mi Historic Pullman Foundation Exhibit Hall
Hospital 1 mi UW Health SwedishAmerican Hospital
Hiking trail 7 mi Lone Rock Trail
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Monthly Weather Data
↑ See chart| Month | Avg High | Avg Low | Rainfall | Snowfall | Sunny Days |
|---|---|---|---|---|---|
| January | 30°F -1°C | 14°F -10°C | 0.5 in 12 mm | 2.4 in60 mm | 13 |
| February | 33°F 1°C | 17°F -8°C | 0.2 in 5 mm | 7.9 in201 mm | 6 |
| March | 56°F 13°C | 34°F 1°C | 3.3 in 84 mm | 7.2 in182 mm | 9 |
| April | 61°F 16°C | 42°F 5°C | 3.1 in 78 mm | 0.1 in2 mm | 4 |
| May | 70°F 21°C | 49°F 10°C | 3.0 in 76 mm | — | 9 |
| June | 84°F 29°C | 64°F 18°C | 4.1 in 104 mm | — | 10 |
| July | 85°F 30°C | 69°F 20°C | 5.5 in 139 mm | — | 8 |
| August | 80°F 26°C | 62°F 17°C | 4.4 in 113 mm | — | 14 |
| September | 78°F 25°C | 56°F 13°C | 2.5 in 62 mm | — | 18 |
| October | 66°F 19°C | 48°F 9°C | 1.4 in 37 mm | — | 12 |
| November | 49°F 9°C | 34°F 1°C | 0.9 in 24 mm | 10.3 in261 mm | 11 |
| December | 33°F 1°C | 19°F -7°C | 1.8 in 45 mm | 7.2 in184 mm | 4 |
Weather Days by Month
↑ See chart| Month | Sunny Days | Storm Days |
|---|---|---|
| January | 13 | 1 |
| February | 6 | 0 |
| March | 9 | 4 |
| April | 4 | 2 |
| May | 9 | 2 |
| June | 10 | 4 |
| July | 8 | 7 |
| August | 14 | 7 |
| September | 18 | 5 |
| October | 12 | 1 |
| November | 11 | 0 |
| December | 4 | 1 |
Water Temperatures Data
↑ See chart| Month | Lake Avg High |
|---|---|
| January | 32°F 0°C |
| February | 32°F 0°C |
| March | 36°F 2°C |
| April | 46°F 8°C |
| May | 56°F 13°C |
| June | 69°F 21°C |
| July | 77°F 25°C |
| August | 72°F 22°C |
| September | 65°F 18°C |
| October | 58°F 14°C |
| November | 42°F 5°C |
| December | 32°F 0°C |