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Rockford Weather, Forecast, Temperature and Precipitation

Rockford Weather Related Indexes Graph

2010 Weather Summary Rockford, IL Illinois United States
Weather Index 31 59 100
Hail Index 142 141 100
Hurricane Index 5 15 100
Tornado Index 91 171 100
 
Annual Maximum Avg. Temperature 58.0 °F 61.0 °F N/A
Annual Minimum Avg. Temperature 38.0 °F 42.0 °F N/A
Annual Avg. Temperature 47.7 °F 51.1 °F N/A
Annual Heating Degree Days (Tot Degrees < 65) 6,969 6,050 N/A
Annual Cooling Degree Days (Tot Degrees > 65) 702 1,011 N/A
Percent of Possible Sunshine 52 57 N/A
Mean Sky Cover (Sunrise to Sunset - Out of 10) 6 6 N/A
Mean Number of Days Clear (Out of 365 Days) 93 99 N/A
Mean Number of Days Rain (Out of 365 Days) 118 115 N/A
Mean Number of Days Snow (Out of 365 Days) 11 8 N/A
Avg. Annual Precipitation (Total Inches) 36.00" 36.00" N/A
Avg. Annual Snowfall (Total Inches) 35.00" 27.00" N/A

The data for Rockford, IL may also contain data for the following areas: Rockford

Annual Heating Degree Days (HDD): A form of Degree Day used to estimate energy requirements for heating. Typically, heating degree days are calculated as how much colder the mean temperature at a location is than 65°F on a given day. For example, if a location experiences a mean temperature of 55°F on a certain day, there were 10 HDD that day because 65 - 55 = 10, according to the National Weather Service.

Annual Cooling Degree Days (CDD): A form of Degree Day used to estimate energy requirements for air conditioning or refrigeration. Typically, cooling degree days are calculated as how much warmer the mean temperature at a location is than 65°F on a given day. For example, if a location experiences a mean temperature of 75°F on a certain day, there were 10 CDD that day because 75 - 65 = 10, according to the National Weather Service.

Mean Sky Cover: reflects the approximate amount that the sky is covered with clouds, sunrise to sunset on a scale of 0 to 10

Index score: (100 = National Average) for an area is compared to the national average of 100. A score of 200 indicates twice the national average, while 50 indicates half the national average. Note: A higher Weather Index score represents better overall weather (higher number good). A higher Hail, Hurricane or Tornado Index means the chance of that weather event is higher (higher number bad).

Information is deemed reliable but not guaranteed. Demographic Information FAQ

Rockford 2010 Avg. Monthly Low Temperatures

2010 Avg. Monthly Low Temperature Rockford, IL Illinois United States
Avg. Annual Low Temperature 37.8 °F 39.4 °F N/A
Avg. January Low Temperature 11.2 °F 13.6 °F N/A
Avg. February Low Temperature 15.2 °F 17.6 °F N/A
Avg. March Low Temperature 25.6 °F 27.9 °F N/A
Avg. April Low Temperature 36.9 °F 38.5 °F N/A
Avg. May Low Temperature 47.6 °F 48.8 °F N/A
Avg. June Low Temperature 57.4 °F 58.5 °F N/A
Avg. July Low Temperature 61.9 °F 62.9 °F N/A
Avg. August Low Temperature 59.9 °F 60.9 °F N/A
Avg. September Low Temperature 51.6 °F 52.8 °F N/A
Avg. October Low Temperature 40.3 °F 41.3 °F N/A
Avg. November Low Temperature 28.8 °F 30.9 °F N/A
Avg. December Low Temperature 17.1 °F 19.6 °F N/A

The data for Rockford, IL may also contain data for the following areas: Rockford

Information is deemed reliable but not guaranteed. Demographic Information FAQ

Rockford 2010 Avg. Monthly High Temperatures

2010 Avg. Monthly High Temperature Rockford, IL Illinois United States
Avg. Annual High Temperature 58.2 °F 60.3 °F N/A
Avg. January High Temperature 28.2 °F 30.9 °F N/A
Avg. February High Temperature 32.7 °F 35.2 °F N/A
Avg. March High Temperature 44.4 °F 46.8 °F N/A
Avg. April High Temperature 59.0 °F 60.8 °F N/A
Avg. May High Temperature 71.0 °F 72.7 °F N/A
Avg. June High Temperature 80.4 °F 82.1 °F N/A
Avg. July High Temperature 84.3 °F 85.6 °F N/A
Avg. August High Temperature 82.2 °F 83.3 °F N/A
Avg. September High Temperature 74.7 °F 76.5 °F N/A
Avg. October High Temperature 62.6 °F 64.8 °F N/A
Avg. November High Temperature 46.5 °F 48.8 °F N/A
Avg. December High Temperature 32.9 °F 35.6 °F N/A

The data for Rockford, IL may also contain data for the following areas: Rockford

Information is deemed reliable but not guaranteed. Demographic Information FAQ

Rockford 2010 Avg. Monthly Precipitation

2010 Avg. Monthly Precipitation Rockford, IL Illinois United States
Avg. Annual Precipitation 34.89" 36.65" N/A
Avg. January Precipitation 1.25" 1.64" N/A
Avg. February Precipitation 1.19" 1.51" N/A
Avg. March Precipitation 2.12" 2.75" N/A
Avg. April Precipitation 3.58" 3.63" N/A
Avg. May Precipitation 3.77" 4.07" N/A
Avg. June Precipitation 4.58" 4.10" N/A
Avg. July Precipitation 3.83" 3.88" N/A
Avg. August Precipitation 4.06" 3.62" N/A
Avg. September Precipitation 3.46" 3.21" N/A
Avg. October Precipitation 2.51" 2.72" N/A
Avg. November Precipitation 2.65" 3.07" N/A
Avg. December Precipitation 1.89" 2.44" N/A

The data for Rockford, IL may also contain data for the following areas: Rockford

Information is deemed reliable but not guaranteed. Demographic Information FAQ