April weather forecastRockwood, IL
April
Weather in April
April is an enjoyable spring month in Rockwood, Illinois, with an average temperature varying between 66.4°F (19.1°C) and 48.2°F (9°C).Temperature
In Rockwood, the onset of April comes with an increased average high-temperature, moving from March's fresh 55°F (12.8°C) to an enjoyable 66.4°F (19.1°C). Throughout April, the temperature falls to an average low of 48.2°F (9°C).Humidity
In April, the average relative humidity is 77%.Rainfall
The wettest months are April and May, with an average 1.22" (31mm) of rainfall.Snowfall
April through September are months without snowfall.Daylight
In Rockwood, the average length of the day in April is 13h and 12min.On the first day of April, sunrise is at 6:42 am and sunset at 7:22 pm. On the last day of the month, sunrise is at 6:03 am and sunset at 7:48 pm CDT.
Sunshine
In Rockwood, the average sunshine in April is 8.7h.UV index
In Rockwood, Illinois, the average daily maximum UV index in April is 5. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In April, an average UV index of 5 transforms into the following instructions:
Take necessary precautions - Suggestions to elude sunburn are provided. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Rockwood, IL
- Average high temperature in April: 66.4°F
The warmest month (with the highest average high temperature) is July (87.8°F).
The month with the lowest average high temperature is January (39.4°F).
- Average low temperature in April: 48.2°F
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).
Average pressure in April
Rockwood, IL
- Average pressure in April: 29.95"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in April
Rockwood, IL
- Average wind speed in April: 8.8mph
The windiest month (with the highest average wind speed) is January (9.3mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).
Average humidity in April
Rockwood, IL
- Average humidity in April: 77%
The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (71%).
Average rainfall in April
Rockwood, IL
- Average rainfall in April: 1.22"
The wettest months (with the highest rainfall) are April and May (1.22").
The driest month (with the least rainfall) is September (0.43").
Average rainfall days in April
Rockwood, IL
- Average rainfall days in April: 11.3 days
The month with the highest number of rainy days is July (13.4 days).
The month with the least rainy days is January (5.9 days).
Average snowfall in April
Rockwood, IL
- Average snowfall in April: 0"
The month with the highest snowfall is February (0.59").
The months with the least snowfall are April, May, June, July, August and September (0").
Average snowfall days in April
Rockwood, IL
- Average snowfall days in April: 0.2 days
The month with the highest number of snowfall days is January (3.7 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Rockwood, IL
- Average daylight in April: 13h and 12min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in April: 8h and 42min
The months with the most sunshine are June and July (Average sunshine: 10h and 36min).
The months with the least sunshine are January and February (Average sunshine: 4h and 48min).
Average sunshine days in April
Rockwood, IL
- Average sunshine days in April: 15.8 days
The month with the most sunshine days is October (21.9 days).
The month with the least sunshine days is July (13.5 days).
Average UV index in April
Rockwood, IL
- Average UV index in April: 5
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in April
Rockwood, IL
- Average cloud cover in April: 41
The months with the most cloud cover are January and February (Cloud cover 48).
The month with the least cloud cover is June (Cloud cover 27).
Average visibility in April
Rockwood, IL
- Average visibility in April: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
