May weather forecast and climate
Pioneer, CA

Weather in May

The last month of the spring, May, is a comfortable month in Pioneer, California, with average temperature varying between 44.6°F (7°C) and 67.1°F (19.5°C).

Temperature

In Pioneer, the average high-temperature marginally rises, from a moderate 59.5°F (15.3°C) in April, to an enjoyable 67.1°F (19.5°C). In May, the average low-temperature is 44.6°F (7°C).

Humidity

In May, the average relative humidity is 60%.

Rainfall

In Pioneer, during 9.3 rainfall days, 2.09" (53mm) of precipitation is typically accumulated. Throughout the year, there are 78.6 rainfall days, and 31.18" (792mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Pioneer are January through May, October through December. May is the last month it regularly snows in Pioneer, California. During 0.5 snowfall days, in May, Pioneer aggregates 0.63" (16mm) of snow. In Pioneer, during the entire year, snow falls for 27.8 days, and aggregates up to 71.02" (1804mm) of snow.

Daylight

In Pioneer, the average length of the day is 14.3h.

Sunshine

In Pioneer, the average sunshine in May is 11h.

UV index

In Pioneer, California, the average daily maximum UV index in May is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to the Sun's UV rays for the ordinary person.
Note: The average daily UV index of 4 in May transform into the following instructions:
Take precautions - Protection against the skin and eye damage is obliged. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the temperature in May in Pioneer?

In Pioneer, in May, the average high-temperature is 67.1°F (19.5°C), and the average low-temperature is 44.6°F (7°C).

What is the average humidity in May in Pioneer?

The average relative humidity in May in Pioneer, California, is 60%.

How many days does it rain in May in Pioneer?

In Pioneer, during May, the rain falls for 9.3 days and regularly aggregates up to 2.09" (53mm) of precipitation.

What is the last month it snows in Pioneer?

May is the last month it regularly snows. During 0.5 snowfall days, in May, Pioneer aggregates 0.63" (16mm) of snow.

How many hours of daylight does Pioneer have in May?

In Pioneer, California, the average length of the day in May is 14.3h.

How many hours of sunshine does Pioneer have in May?

In May, the average sunshine in Pioneer, California, is 11h.

What is the UV index intensity in May in Pioneer?

In Pioneer, the average daily maximum UV index in May is 4. A UV Index of 3 to 5 symbolizes a moderate vulnerability from unsafe exposure to the Sun's UV rays.

Average temperature in May
Pioneer, CA

Average temperature in May - Pioneer, CA
  • Average high temperature in May: 67.1°F

The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is December (48.6°F).

  • Average low temperature in May: 44.6°F

The month with the highest average low temperature is July (57.4°F).
The coldest month (with the lowest average low temperature) is December (32.9°F).

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Average pressure in May
Pioneer, CA

Average pressure in May - Pioneer, CA
  • Average pressure in May: 29.95"

The month with the highest atmospheric pressure is January (30.16").
The month with the lowest atmospheric pressure is June (29.91").

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Average wind speed in May
Pioneer, CA

Average wind speed in May - Pioneer, CA
  • Average wind speed in May: 5.2mph

The windiest month (with the highest average wind speed) is February (6.2mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

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Average humidity in May
Pioneer, CA

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

The month with the highest relative humidity is March (74%).
Months with the lowest relative humidity are July and August (37%).

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Average rainfall in May
Pioneer, CA

Average rainfall in May - Pioneer, CA
  • Average rainfall in May: 2.09"

The wettest month (with the highest rainfall) is March (6.14").
The driest months (with the least rainfall) are July and August (0.08").

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Average rainfall days in May
Pioneer, CA

Average rainfall days in May - Pioneer, CA
  • Average rainfall days in May: 9.3 days

The month with the highest number of rainy days is March (12.1 days).
The month with the least rainy days is August (1.8 days).

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Average snowfall in May
Pioneer, CA

Average snowfall in May - Pioneer, CA
  • Average snowfall in May: 0.63"

The month with the highest snowfall is March (18.98").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days in May
Pioneer, CA

Average snowfall days in May - Pioneer, CA
  • Average snowfall days in May: 0.5 days

The month with the highest number of snowfall days is March (6.4 days).
Months with the least snowfall days are June, July and August (0 days).

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

Average daylight in May / Average sunshine in May - Pioneer, CA
  • Average daylight in May: 14.3h

The month with the longest days is June (Average daylight: 14.8h).
The month with the shortest days is December (Average daylight: 9.5h).

  • Average sunshine in May: 11h

The month with the most sunshine is July (Average sunshine: 12.2h).
The month with the least sunshine is December (Average sunshine: 5.9h).

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Average sunshine days in May
Pioneer, CA

Average sunshine days in May - Pioneer, CA
  • Average sunshine days in May: 18.5 days

The month with the most sunshine days is August (27.3 days).
The month with the least sunshine days is March (14.3 days).

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Average UV index in May
Pioneer, CA

Average UV index in May - Pioneer, CA
  • Average UV index in May: 4

Months with the highest UV index are June, July and August (UV index 6).
Months with the lowest UV index are February, November and December (UV index 2).

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Average cloud cover in May
Pioneer, CA

Average cloud cover in May - Pioneer, CA
  • Average cloud cover in May: 21

The month with the most cloud cover is March (Cloud cover 37).
Months with the least cloud cover are July and August (Cloud cover 5).

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Average visibility in May
Pioneer, CA

Average visibility in May - Pioneer, CA
  • Average visibility in May: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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