April weather forecastCastlewood, CO
April
Weather in April
April in Castlewood, Colorado, is a mild spring month, with temperature in the range of an average low of 34.9°F (1.6°C) and an average high of 58.8°F (14.9°C).Temperature
The shift from March to April is marked by a slight increase in the average high-temperature, moving from a fresh 52.3°F (11.3°C) to a moderate 58.8°F (14.9°C). A significant drop from the day's peak to an average low-temperature of 34.9°F (1.6°C) is noted during the nights in April.Humidity
The average relative humidity in April is 51%.Rainfall
In Castlewood, Colorado, in April, during 11.3 rainfall days, 1.42" (36mm) of precipitation is typically accumulated. Throughout the year, there are 94.2 rainfall days, and 11.97" (304mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. The month with the most snowfall is April, when snow falls for 6.1 days and typically aggregates up to 6.34" (161mm) of snow.Daylight
The average length of the day in April is 13h and 17min.On the first day of April, sunrise is at 6:42 am and sunset at 7:24 pm. On the last day of the month, sunrise is at 6:00 am and sunset at 7:52 pm MDT.
Sunshine
In April, the average sunshine is 10.7h.UV index
The average daily maximum UV index in April is 3. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the ordinary person.Note: A typical high UV index of 3 in April suggests the following recommendations:
Ensure safety - Recommendations to avert sunburn are presented. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Always opt for UVA and UVB-resistant sunglasses on radiant days. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Castlewood, CO
- Average high temperature in April: 58.8°F
The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is December (40.3°F).
- Average low temperature in April: 34.9°F
The month with the highest average low temperature is July (59.2°F).
The coldest month (with the lowest average low temperature) is December (20.7°F).
Average pressure in April
Castlewood, CO
- Average pressure in April: 29.91"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The months with the lowest atmospheric pressure are April and June (29.91"Hg).
Average wind speed in April
Castlewood, CO
- Average wind speed in April: 7.8mph
The windiest month (with the highest average wind speed) is April (7.8mph).
The calmest months (with the lowest average wind speed) are August and December (6.5mph).
Average humidity in April
Castlewood, CO
- Average humidity in April: 51%
The month with the highest relative humidity is February (65%).
The months with the lowest relative humidity are June, August and September (43%).
Average rainfall in April
Castlewood, CO
- Average rainfall in April: 1.42"
The wettest month (with the highest rainfall) is May (2.2").
The driest month (with the least rainfall) is September (0.47").
Average rainfall days in April
Castlewood, CO
- Average rainfall days in April: 11.3 days
The month with the highest number of rainy days is May (14.2 days).
The month with the least rainy days is November (3.4 days).
Average snowfall in April
Castlewood, CO
- Average snowfall in April: 6.34"
The month with the highest snowfall is April (6.34").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in April
Castlewood, CO
- Average snowfall days in April: 6.1 days
The month with the highest number of snowfall days is February (9.4 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in April /
Average sunshine in April
Castlewood, CO
- Average daylight in April: 13h and 18min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in April: 10h and 42min
The months with the most sunshine are June and July (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 6h and 48min).
Average sunshine days in April
Castlewood, CO
- Average sunshine days in April: 12.7 days
The month with the most sunshine days is November (23.2 days).
The month with the least sunshine days is April (12.7 days).
Average UV index in April
Castlewood, CO
- Average UV index in April: 3
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in April
Castlewood, CO
- Average cloud cover in April: 26
The month with the most cloud cover is April (Cloud cover 26).
The months with the least cloud cover are June and September (Cloud cover 15).
Average visibility in April
Castlewood, CO
- 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).
