April weather forecast
Upper Lake, CA

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Weather in April

April in Upper Lake, California, is a refreshing spring month, with an average temperature varying between 64.8°F (18.2°C) and 42.3°F (5.7°C).

Temperature

Upper Lake in April experiences a slight uptick in the average high-temperature, adjusting from March's moderate 57.9°F (14.4°C) to a comfortable 64.8°F (18.2°C). A noticeable downturn in temperature characterizes the April nights in Upper Lake, averaging at a wintry 42.3°F (5.7°C).

Humidity

In Upper Lake, the average relative humidity in April is 68%.

Rainfall

In Upper Lake, in April, it is raining for 11 days, with typically 1.18" (30mm) of accumulated precipitation. In Upper Lake, during the entire year, the rain falls for 92 days and collects up to 21.02" (534mm) of precipitation.

Snowfall

April through October are months without snowfall in Upper Lake, California.

Daylight

In Upper Lake, the average length of the day in April is 13h and 16min.
On the first day of April in Upper Lake, 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

In April, the average sunshine in Upper Lake is 9.7h.

UV index

In April, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: In April, the maximum UV index of 4 transforms into these recommendations:
Heed the precautions - It is counselled to guard against solar damage. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Experience reduced UV exposure by about half when donning a wide-brim hat.
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Frequently asked questions

What is the average April temperature in Upper Lake?

In Upper Lake, 64.8°F (18.2°C) is the average high-temperature and 42.3°F (5.7°C) is the average low-temperature during April.

What is the average humidity in April in Upper Lake?

In Upper Lake, the average relative humidity in April is 68%.

How much does it rain in Upper Lake in April?

In Upper Lake, California, during April, the rain falls for 11 days and regularly aggregates up to 1.18" (30mm) of precipitation.

When it does not snow in Upper Lake?

April through October are months without snowfall.

Does it snow in Upper Lake in April?

In April, in Upper Lake, it doesn't snow. March is the latest month when it typically snows.

What is the average length of the day in April in Upper Lake?

The average day length in April in Upper Lake, California, is 13h and 16min.

What time are sunrise and sunset in April in Upper Lake?

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.

How many hours of sunshine does Upper Lake have in April?

The average sunshine duration in April in Upper Lake is 9.7h.

What is the UV index reading in April in Upper Lake?

The average daily maximum UV index in April is 4. A UV Index estimate of 3 to 5 represents a medium health risk from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in April
Upper Lake, CA

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).

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Average pressure in April
Upper Lake, CA

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).

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Average wind speed in April
Upper Lake, CA

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).

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Average humidity in April
Upper Lake, CA

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%).

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Average rainfall in April
Upper Lake, CA

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").

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Average rainfall days in April
Upper Lake, CA

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).

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Average snowfall in April
Upper Lake, CA

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").

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Average snowfall days in April
Upper Lake, CA

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).

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Average daylight in April /
Average sunshine in April
Upper Lake, CA

Average daylight in April / Average sunshine in April - Upper Lake, CA
  • Average daylight in April: 13h and 2min

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 4min

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).

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Average sunshine days in April
Upper Lake, CA

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).

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Average UV index in April
Upper Lake, CA

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).

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Average cloud cover in April
Upper Lake, CA

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).

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Average visibility in April
Upper Lake, CA

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).

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Upper Lake, California, USA

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