April weather forecastPullman, WA
April
Weather in April
April sees a warming trend in Pullman, bearing witness to the full glory of spring. Snowfall stops completely, making way for more rain showers and overcast conditions. Overall, April guarantees warmer days, with rare instances of strong winds. This month brings a noticeably lower cloud cover, allowing for extended hours of daylight. With 1.57" (40mm) of rainfall, April has the least monthly rainfall recorded in Pullman in the first half of the year.Temperature
April's onset witnesses a minor shift in the average high-temperature, moving from a frosty 46.8°F (8.2°C) in March to a cool 54.5°F (12.5°C). Nighttime temperatures hover around an average low of 36°F (2.2°C) in April.Humidity
The average relative humidity in April is 71%.Rainfall
In Pullman, in April, it is raining for 15.3 days, with typically 1.57" (40mm) of accumulated precipitation. In Pullman, during the entire year, the rain falls for 131 days and collects up to 18.15" (461mm) of precipitation.Snowfall
Months with snowfall are January through May, September through December. In Pullman, during April, snow falls for 3 days and regularly aggregates up to 1.5" (38mm) of snow. Throughout the year, there are 53.7 snowfall days, and 37.44" (951mm) of snow is accumulated.Daylight
The average length of the day in April is 13h and 38min.On the first day of the month, sunrise is at 6:26 am and sunset at 7:18 pm. On the last day of April, sunrise is at 5:33 am and sunset at 7:57 pm PDT.
Sunshine
In Pullman, Washington, the average sunshine in April is 9.5h.UV index
In April, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum daily UV index of 3 in April converts into the following recommendations:
Exercise prevention - Precautions against solar damage are endorsed. It's recommended to limit sun exposure when its radiation is at its peak during midday. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Pullman, WA
- Average high temperature in April: 54.5°F
The warmest month (with the highest average high temperature) is August (83.7°F).
The month with the lowest average high temperature is December (34.3°F).
- Average low temperature in April: 36°F
The month with the highest average low temperature is August (58.6°F).
The coldest month (with the lowest average low temperature) is December (24.1°F).
Average pressure in April
Pullman, WA
- Average pressure in April: 30"Hg
The month with the highest atmospheric pressure is January (30.2"Hg).
The month with the lowest atmospheric pressure is August (29.91"Hg).
Average wind speed in April
Pullman, WA
- Average wind speed in April: 6.7mph
The windiest months (with the highest average wind speed) are March and April (6.7mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in April
Pullman, WA
- Average humidity in April: 71%
The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is August (39%).
Average rainfall in April
Pullman, WA
- Average rainfall in April: 1.57"
The wettest month (with the highest rainfall) is January (2.2").
The driest months (with the least rainfall) are July and August (0.47").
Average rainfall days in April
Pullman, WA
- Average rainfall days in April: 15.3 days
The month with the highest number of rainy days is March (15.4 days).
The months with the least rainy days are July and August (5.8 days).
Average snowfall in April
Pullman, WA
- Average snowfall in April: 1.5"
The month with the highest snowfall is February (10.04").
The months with the least snowfall are June, July and August (0").
Average snowfall days in April
Pullman, WA
- Average snowfall days in April: 3 days
The month with the highest number of snowfall days is December (12.9 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in April /
Average sunshine in April
Pullman, WA
- Average daylight in April: 13h and 36min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in April: 9h and 30min
The month with the most sunshine is August (Average sunshine: 12h and 6min).
The months with the least sunshine are January, February and December (Average sunshine: 4h and 42min).
Average sunshine days in April
Pullman, WA
- Average sunshine days in April: 12.3 days
The month with the most sunshine days is July (23.4 days).
The month with the least sunshine days is February (10.2 days).
Average UV index in April
Pullman, WA
- Average UV index in April: 3
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in April
Pullman, WA
- Average cloud cover in April: 40
The months with the most cloud cover are January and February (Cloud cover 52).
The months with the least cloud cover are July and August (Cloud cover 12).
Average visibility in April
Pullman, WA
- Average visibility in April: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (5mi).
