May weather forecast
Winchester, CA

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Weather in May

May, the last month of the spring in Winchester, is a moderately hot month, with temperature in the range of an average low of 51.3°F (10.7°C) and an average high of 74.3°F (23.5°C).

Temperature

The transition from April to May brings an average high-temperature of a warm 74.3°F (23.5°C), barely different from April's 70.7°F (21.5°C). Winchester experiences a dramatic descent in temperature during May, with the average nighttime reading settling at a cool 51.3°F (10.7°C).

Humidity

May is the most humid month in Winchester, with an average relative humidity of 60%.

Rainfall

In Winchester, in May, it is raining for 4.6 days, with typically 0.35" (9mm) of accumulated precipitation. In Winchester, during the entire year, the rain falls for 55.7 days and collects up to 7.05" (179mm) of precipitation.

Snowfall

January, March through December are months without snowfall.

Daylight

In May, the average length of the day in Winchester is 13h and 55min.
On the first day of the month, sunrise is at 5:58 am and sunset at 7:32 pm. On the last day of May, sunrise is at 5:38 am and sunset at 7:53 pm PDT.

Sunshine

The average sunshine in May is 11.4h.

UV index

In May, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the average person.
Note: The UV index of 5 in May translates into these instructions:
Undertake precautions - Guarding against sun damage is counselled. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
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Frequently asked questions

What are May temperatures in Winchester?

Winchester in May has an average high-temperature of 74.3°F (23.5°C) and an average low-temperature of 51.3°F (10.7°C).

What is the most humid month in Winchester?

May is the most humid month in Winchester, with an average relative humidity of 60%.

What is the average humidity in May in Winchester?

In Winchester, California, the average relative humidity in May is 60%.

How much does it rain in Winchester in May?

In Winchester, California, during May, the rain falls for 4.6 days and regularly aggregates up to 0.35" (9mm) of precipitation.

When it does not snow in Winchester?

In Winchester, California, snow does not fall in January, March through December.

What is the average length of the day in May in Winchester?

In Winchester, California, the average day length in May is 13h and 55min.

When is the sunrise / sunset in May in Winchester?

On the first day of May, sunrise is at 5:58 am and sunset at 7:32 pm. On the last day of the month, sunrise is at 5:38 am and sunset at 7:53 pm PDT.

How many hours of sunshine does Winchester have in May?

In Winchester, California, the average sunshine duration in May is 11.4h.

What is the UV index intensity in May in Winchester?

In Winchester, California, the average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a medium health risk from unprotected exposure to UV radiation.
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 May
Winchester, CA

Average temperature in May - Winchester, CA
  • Average high temperature in May: 74.3°F

The warmest month (with the highest average high temperature) is August (89.6°F).
The month with the lowest average high temperature is December (61°F).

  • Average low temperature in May: 51.3°F

The month with the highest average low temperature is August (63.3°F).
The coldest month (with the lowest average low temperature) is December (43°F).

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Average pressure in May
Winchester, CA

Average pressure in May - Winchester, CA
  • Average pressure in May: 29.9"Hg

The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).

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Average wind speed in May
Winchester, CA

Average wind speed in May - Winchester, CA
  • Average wind speed in May: 5.3mph

The windiest month (with the highest average wind speed) is April (5.5mph).
The calmest months (with the lowest average wind speed) are August and September (4.2mph).

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Average humidity in May
Winchester, CA

Average humidity in May - Winchester, CA
  • Average humidity in May: 60%

The month with the highest relative humidity is May (60%).
The month with the lowest relative humidity is August (47%).

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Average rainfall in May
Winchester, CA

Average rainfall in May - Winchester, CA
  • Average rainfall in May: 0.35"

The wettest month (with the highest rainfall) is December (1.38").
The driest month (with the least rainfall) is June (0.04").

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Average rainfall days in May
Winchester, CA

Average rainfall days in May - Winchester, CA
  • Average rainfall days in May: 4.6 days

The month with the highest number of rainy days is March (7.2 days).
The month with the least rainy days is June (1.3 days).

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Average snowfall in May
Winchester, CA

Average snowfall in May - Winchester, CA
  • Average snowfall in May: 0"

The month with the highest snowfall is February (0.04").
The months with the least snowfall are January, March, April, May, June, July, August, September, October, November and December (0").

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Average snowfall days in May
Winchester, CA

Average snowfall days in May - Winchester, CA
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is February (0.2 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October, November and December (0 days).

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Average daylight in May /
Average sunshine in May
Winchester, CA

Average daylight in May / Average sunshine in May - Winchester, CA
  • Average daylight in May: 13h and 5min

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 10h and 0min).

  • Average sunshine in May: 11h and 2min

The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).

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Average sunshine days in May
Winchester, CA

Average sunshine days in May - Winchester, CA
  • Average sunshine days in May: 23.2 days

The month with the most sunshine days is June (26.9 days).
The month with the least sunshine days is February (21.6 days).

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Average UV index in May
Winchester, CA

Average UV index in May - Winchester, CA
  • Average UV index in May: 5

The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is December (UV index 3).

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Average cloud cover in May
Winchester, CA

Average cloud cover in May - Winchester, CA
  • Average cloud cover in May: 17

The months with the most cloud cover are March and December (Cloud cover 24).
The month with the least cloud cover is August (Cloud cover 5).

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Average visibility in May
Winchester, CA

Average visibility in May - Winchester, CA
  • Average visibility in May: 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).

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Winchester, California, USA

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