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Rockton, IL weather and climate

Winnebago County, IL · population 8,238 · about 719 ft elevation

Everything below is a 30 year average for 1991-2020, computed from daily climate history at Rockton's own coordinates.

The year at a glance

Sunny days
183
clear or partly cloudy, per year
Precipitation
36 in
per year
Wet days
124
rain or snow per year
Snowfall
36 in
per year
Hot days
9
above 90 °F
Freezing nights
144
at or below 32 °F
Humidity
71%
average relative
Average temperature
46 °F
year round

Monthly temperatures

Average daily high and low for each month, in °F.

Daily highDaily low
255075JanMarMayJulSepNovDaily high, Jan: 26 °FDaily high, Feb: 30 °FDaily high, Mar: 42 °FDaily high, Apr: 55 °FDaily high, May: 67 °FDaily high, Jun: 77 °FDaily high, Jul: 80 °FDaily high, Aug: 78 °FDaily high, Sep: 72 °FDaily high, Oct: 59 °FDaily high, Nov: 44 °FDaily high, Dec: 31 °FDaily low, Jan: 11 °FDaily low, Feb: 14 °FDaily low, Mar: 24 °FDaily low, Apr: 35 °FDaily low, May: 46 °FDaily low, Jun: 56 °FDaily low, Jul: 60 °FDaily low, Aug: 58 °FDaily low, Sep: 51 °FDaily low, Oct: 39 °FDaily low, Nov: 28 °FDaily low, Dec: 17 °F
View monthly temperatures as a table
Monthly temperatures (°F)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Daily high263042556777807872594431
Daily low111424354656605851392817

Monthly precipitation

Total rain plus melted snow for each month, in inches.

0.02.04.0JanMarMayJulSepNovRockton, Jan: 1.8 inRockton, Feb: 1.8 inRockton, Mar: 2.4 inRockton, Apr: 4.1 inRockton, May: 4.0 inRockton, Jun: 4.0 inRockton, Jul: 3.4 inRockton, Aug: 3.5 inRockton, Sep: 3.3 inRockton, Oct: 2.8 inRockton, Nov: 2.3 inRockton, Dec: 2.1 in
View monthly precipitation as a table
Monthly precipitation (inches)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Rockton1.81.82.44.14.04.03.43.53.32.82.32.1

Monthly sunny days

Days each month with clear or partly cloudy skies.

01020JanMarMayJulSepNovRockton, Jan: 12 daysRockton, Feb: 12 daysRockton, Mar: 14 daysRockton, Apr: 13 daysRockton, May: 15 daysRockton, Jun: 16 daysRockton, Jul: 20 daysRockton, Aug: 20 daysRockton, Sep: 19 daysRockton, Oct: 17 daysRockton, Nov: 14 daysRockton, Dec: 12 days
View monthly sunny days as a table
Monthly sunny days (days)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Rockton121214131516202019171412

Compare Rockton with another city

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See weather for every covered Illinois city

About this data

Figures are 30 year averages for 1991-2020. Wet days count days with measurable precipitation, calibrated against the wet day counts in NOAA's published climate normals. Sunny days count clear plus partly cloudy days, defined as average cloud cover of 63 percent or less and calibrated against NOAA's published sky cover tables. Snowfall figures are model estimates anchored to NOAA station measurements near each city.

Weather data by Open-Meteo.com (CC BY 4.0). Contains modified Copernicus Climate Change Service information (ERA5, ERA5-Land).