Contents
- Weather in April
- Frequently asked questions
- Average temperature in April
- Average pressure in April
- Average wind speed in April
- Average humidity in April
- Average rainfall in April
- Average rainfall days in April
- Average snowfall in April
- Average snowfall days in April
- Average daylight in April
- Average sunshine in April
- Average sunshine days in April
- Average UV index in April
- Average cloud cover in April
- Average visibility in April
Weather in April
Temperature
The onset of April brings a minor temperature shift, with the average high-temperature moving from a pleasant 71.6°F (22°C) in March to a warm 77.9°F (25.5°C). Throughout April nights, Rock Island experiences a consistent temperature average of 59.7°F (15.4°C).Humidity
In Rock Island, the average relative humidity in April is 77%.Rainfall
In Rock Island, in April, it is raining for 13.1 days, with typically 2.17" (55mm) of accumulated precipitation. Throughout the year, in Rock Island, there are 163.7 rainfall days, and 29.37" (746mm) of precipitation is accumulated.Snowfall
In Rock Island, snow does not fall in March through November.Daylight
In April, the average length of the day in Rock Island is 12h and 54min.On the first day of the month, sunrise is at 7:14 am and sunset at 7:45 pm. On the last day of April, in Rock Island, Texas, sunrise is at 6:44 am and sunset at 8:02 pm CDT.
Sunshine
In April, the average sunshine is 7.8h.UV index
In Rock Island, the average daily maximum UV index in April is 5. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the average person.Note: In April, a regular UV index of 5 translates into these guidelines:
Exercise prevention - Precautions against solar damage are endorsed. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Frequently asked questions
What is the temperature in April in Rock Island?
What is the average humidity in April in Rock Island?
How many days does it rain in April in Rock Island?
When it does not snow in Rock Island?
How many hours of daylight does Rock Island have in April?
What time are sunrise and sunset in April in Rock Island?
How many hours of sunshine does Rock Island have in April?
What is the UV index intensity in April in Rock Island?
Average temperature in April
Rock Island, TX
- Average high temperature in April: 77.9°F
The warmest month (with the highest average high temperature) is August (95°F).
The month with the lowest average high temperature is January (60.4°F).
- Average low temperature in April: 59.7°F
The month with the highest average low temperature is August (75°F).
The coldest month (with the lowest average low temperature) is January (44.2°F).
Average pressure in April
Rock Island, TX
- 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 (29.92"Hg).
Average wind speed in April
Rock Island, TX
- Average wind speed in April: 8.7mph
The windiest month (with the highest average wind speed) is April (8.7mph).
The calmest month (with the lowest average wind speed) is September (5.9mph).
Average humidity in April
Rock Island, TX
- Average humidity in April: 77%
The months with the highest relative humidity are March, May and June (78%).
The month with the lowest relative humidity is August (69%).
Average rainfall in April
Rock Island, TX
- Average rainfall in April: 2.17"
The wettest month (with the highest rainfall) is May (4.17").
The driest month (with the least rainfall) is February (1.34").
Average rainfall days in April
Rock Island, TX
- Average rainfall days in April: 13.1 days
The month with the highest number of rainy days is September (18.3 days).
The month with the least rainy days is January (10.4 days).
Average snowfall in April
Rock Island, TX
- Average snowfall in April: 0"
The months with the highest snowfall are January and December (0.12").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").
Average snowfall days in April
Rock Island, TX
- Average snowfall days in April: 0 days
The month with the highest number of snowfall days is January (0.4 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).
Average daylight in April /
Average sunshine in April
Rock Island, TX
- Average daylight in April: 12h and 5min
The month with the longest days is June (Average daylight: 14h and 0min).
The month with the shortest days is December (Average daylight: 10h and 18min).
- Average sunshine in April: 7h and 5min
The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is December (Average sunshine: 4h and 48min).
Average sunshine days in April
Rock Island, TX
- Average sunshine days in April: 14.3 days
The month with the most sunshine days is January (19.3 days).
The month with the least sunshine days is September (9.1 days).
Average UV index in April
Rock Island, TX
- Average UV index in April: 5
The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in April
Rock Island, TX
- Average cloud cover in April: 44
The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in April
Rock Island, TX
- Average visibility in April: 6mi
The months with the highest visibility are January, February, March, April, August, September, October, November and December (6mi).
The months with the lowest visibility are May, June and July (5mi).
Rock Island, Texas, USA
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