April weather forecastPomona, CA
April
Weather in April
April brings with it the charm of Spring and the anticipation of Summer. As Pomona inches towards the warmer months, the weather fluctuates between mild and warm. The moderate temperatures make for excellent outdoor weather, particularly during the extended daylight hours. As rain clouds recede, the skies open up to provide more sunshine hours. April paints a vivid picture of sunny days and enjoyable evenings in Pomona, giving residents and visitors ample reason to step outside.Temperature
In April, Pomona experiences a barely noticeable shift in meteorological conditions, with average high-temperatures moving from 68.9°F (20.5°C) in March to a still agreeable 73°F (22.8°C). Nightfall in April introduces a considerable dip in temperature, settling at an average of 50.4°F (10.2°C).Humidity
In April, the average relative humidity is 53%.Rainfall
In April, in Pomona, the rain falls for 5.6 days. Throughout April, 0.63" (16mm) of precipitation is accumulated. Throughout the year, there are 48 rainfall days, and 7.52" (191mm) of precipitation is accumulated.Snowfall
In Pomona, snow does not fall in January, March through December.Daylight
In Pomona, California, the average length of the day in April is 13h and 4min.On the first day of the month, sunrise is at 6:37 am and sunset at 7:12 pm. On the last day of April, in Pomona, sunrise is at 6:01 am and sunset at 7:34 pm PDT.
Sunshine
In April, the average sunshine is 11.3h.UV index
In Pomona, California, the average daily maximum UV index in April is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: An average UV index of 5 in April transforms into this advice:
Take necessary precautions - Defending against sun damage is advocated. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Pomona, CA
- Average high temperature in April: 73°F
The warmest month (with the highest average high temperature) is August (90.1°F).
The month with the lowest average high temperature is December (63.1°F).
- Average low temperature in April: 50.4°F
The month with the highest average low temperature is August (65.7°F).
The coldest months (with the lowest average low temperature) are February and December (46.8°F).
Average pressure in April
Pomona, CA
- Average pressure in April: 29.96"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in April
Pomona, CA
- Average wind speed in April: 5.7mph
The windiest months (with the highest average wind speed) are April and May (5.7mph).
The calmest month (with the lowest average wind speed) is September (4.4mph).
Average humidity in April
Pomona, CA
- Average humidity in April: 53%
The month with the highest relative humidity is May (56%).
The months with the lowest relative humidity are August and November (45%).
Average rainfall in April
Pomona, CA
- Average rainfall in April: 0.63"
The wettest months (with the highest rainfall) are February and December (1.65").
The driest months (with the least rainfall) are June and August (0.04").
Average rainfall days in April
Pomona, CA
- Average rainfall days in April: 5.6 days
The month with the highest number of rainy days is March (7.6 days).
The month with the least rainy days is June (0.8 days).
Average snowfall days in April
Pomona, CA
- Average snowfall days in April: 0 days
The month with the highest number of snowfall days is February (0.1 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in April /
Average sunshine in April
Pomona, CA
- Average daylight in April: 13h and 6min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in April: 11h and 18min
The month with the most sunshine is July (Average sunshine: 12h and 12min).
The months with the least sunshine are February and December (Average sunshine: 6h and 54min).
Average sunshine days in April
Pomona, CA
- Average sunshine days in April: 23.4 days
The month with the most sunshine days is June (28.7 days).
The month with the least sunshine days is February (21.1 days).
Average UV index in April
Pomona, CA
- Average UV index in April: 5
The month with the highest UV index is August (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 4).
Average cloud cover in April
Pomona, CA
- Average cloud cover in April: 17
The months with the most cloud cover are February, March and December (Cloud cover 21).
The month with the least cloud cover is August (Cloud cover 4).
Average visibility in April
Pomona, CA
- 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).
