April weather forecastUpper Lake, CA
April
Weather in April
April in Upper Lake, California, is a comfortable spring month, with an average temperature varying between 64.8°F (18.2°C) and 42.3°F (5.7°C).Temperature
The coming of April brings a minor shift in Upper Lake's weather, with average high-temperatures adjusting from March's moderate 57.9°F (14.4°C) to an enjoyable 64.8°F (18.2°C). Upper Lake anticipates a pronounced temperature drop from daily highs during the nights of April, with an average low of 42.3°F (5.7°C).Humidity
The average relative humidity in April is 68%.Rainfall
In April, the rain falls for 11 days. Throughout April, 1.18" (30mm) of precipitation is accumulated. In Upper Lake, during the entire year, the rain falls for 92 days and collects up to 21.02" (534mm) of precipitation.Snowfall
In Upper Lake, snow does not fall in April through October.Daylight
In April, the average length of the day is 13h and 16min.On the first day of April, sunrise is at 6:54 am and sunset at 7:35 pm. On the last day of the month, sunrise is at 6:13 am and sunset at 8:04 pm PDT.
Sunshine
The average sunshine in April is 9.7h.UV index
In April, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A maximum daily UV index of 4 during April morphs into the following directions:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Upper Lake, CA
- Average high temperature in April: 64.8°F
The warmest month (with the highest average high temperature) is July (89.6°F).
The month with the lowest average high temperature is December (52.3°F).
- Average low temperature in April: 42.3°F
The month with the highest average low temperature is July (57.7°F).
The coldest month (with the lowest average low temperature) is December (37.2°F).
Average pressure in April
Upper Lake, CA
- Average pressure in April: 30.03"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are June and August (29.91"Hg).
Average wind speed in April
Upper Lake, CA
- Average wind speed in April: 5.3mph
The windiest month (with the highest average wind speed) is April (5.3mph).
The calmest month (with the lowest average wind speed) is November (4.1mph).
Average humidity in April
Upper Lake, CA
- Average humidity in April: 68%
The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is July (47%).
Average rainfall in April
Upper Lake, CA
- Average rainfall in April: 1.18"
The wettest month (with the highest rainfall) is February (4.06").
The driest month (with the least rainfall) is July (0.04").
Average rainfall days in April
Upper Lake, CA
- Average rainfall days in April: 11 days
The month with the highest number of rainy days is March (15.9 days).
The months with the least rainy days are July and August (1.3 days).
Average snowfall in April
Upper Lake, CA
- Average snowfall in April: 0"
The months with the highest snowfall are January and February (0.47").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in April
Upper Lake, CA
- Average snowfall days in April: 0 days
The month with the highest number of snowfall days is February (0.9 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in April /
Average sunshine in April
Upper Lake, CA
- 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 30min).
- Average sunshine in April: 9h and 42min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).
Average sunshine days in April
Upper Lake, CA
- Average sunshine days in April: 17.3 days
The months with the most sunshine days are July and August (28.3 days).
The month with the least sunshine days is March (13.7 days).
Average UV index in April
Upper Lake, CA
- Average UV index in April: 4
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 3).
Average cloud cover in April
Upper Lake, CA
- Average cloud cover in April: 33
The month with the most cloud cover is March (Cloud cover 44).
The months with the least cloud cover are July and August (Cloud cover 5).
Average visibility in April
Upper Lake, CA
- Average visibility in April: 6mi
The months with the highest visibility are January, February, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are March and December (5mi).
