May weather forecast
Sacramento, CA

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The State Capitol Building in Sacramento, California
The State Capitol Building in Sacramento, California

Weather in May

With May’s arrival in Sacramento, defined shifts in weather patterns become evident. A steep and rewarding decrease in rainfall to 0.43" (11mm) becomes noticeable, indicating the beginning of the drier season. As schooling fish begin to make their way upstream, local fishermen gear up to take advantage of the conditions. Rising temperatures fill picnic spots, and the beautiful sequences of stunning sunsets become the norm. As the alluring weather in Sacramento continues its positive progression, many outdoor activities and city-wide events start to kick into full swing.

Temperature

The arrival of May brings a soft temperature shift, with the average high-temperature nudging from an agreeable 70.3°F (21.3°C) in April to a warm 78.4°F (25.8°C). Nightly average temperatures in May reveal a significant dip from daytime highs, registering a consistent a fresh 52°F (11.1°C).

Humidity

In Sacramento, the average relative humidity in May is 58%.

Rainfall

In Sacramento, in May, it is raining for 4.7 days, with typically 0.43" (11mm) of accumulated precipitation. Throughout the year, there are 66.6 rainfall days, and 7.6" (193mm) of precipitation is accumulated.

Daylight

In Sacramento, the average length of the day in May is 14h and 17min.
On the first day of May in Sacramento, California, sunrise is at 6:07 am and sunset at 7:58 pm. On the last day of the month, sunrise is at 5:43 am and sunset at 8:24 pm PDT.

Sunshine

The average sunshine in May is 10.8h.

UV index

In May, the average daily maximum UV index in Sacramento is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The maximum UV index of 5 during May translates into these guidelines:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
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Frequently asked questions

What is the average May temperature in Sacramento?

In May, the average high-temperature and low-temperature are 78.4°F (25.8°C) and 52°F (11.1°C) respectively.

What is the average humidity in May in Sacramento?

The average relative humidity in May is 58%.

How many days does it rain in May in Sacramento?

In Sacramento, California, in May, it is raining for 4.7 days, with typically 0.43" (11mm) of accumulated precipitation.

How many hours of daylight does Sacramento have in May?

In Sacramento, California, the average day length in May is 14h and 17min.

What time are sunrise and sunset in May in Sacramento?

In May, on the first day of the month, sunrise is at 6:07 am and sunset at 7:58 pm. On the last day of the month, sunrise is at 5:43 am and sunset at 8:24 pm PDT.

How many hours of sunshine does Sacramento have in May?

In May, the average sunshine duration in Sacramento is 10.8h.

How high is the UV index in May in Sacramento?

In Sacramento, California, the average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a medium health risk from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Sacramento, CA

Average temperature in May - Sacramento, CA
  • Average high temperature in May: 78.4°F

The warmest month (with the highest average high temperature) is July (94.6°F).
The month with the lowest average high temperature is December (54.5°F).

  • Average low temperature in May: 52°F

The month with the highest average low temperature is August (59.5°F).
The coldest month (with the lowest average low temperature) is December (41.4°F).

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Average pressure in May
Sacramento, CA

Average pressure in May - Sacramento, CA
  • Average pressure in May: 29.96"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

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Average wind speed in May
Sacramento, CA

Average wind speed in May - Sacramento, CA
  • Average wind speed in May: 6.2mph

The windiest month (with the highest average wind speed) is February (6.3mph).
The calmest months (with the lowest average wind speed) are September and November (5mph).

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Average humidity in May
Sacramento, CA

Average humidity in May - Sacramento, CA
  • Average humidity in May: 58%

The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is September (45%).

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Average rainfall in May
Sacramento, CA

Average rainfall in May - Sacramento, CA
  • Average rainfall in May: 0.43"

The wettest month (with the highest rainfall) is March (1.34").
The driest month (with the least rainfall) is August (0.04").

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Average rainfall days in May
Sacramento, CA

Average rainfall days in May - Sacramento, CA
  • Average rainfall days in May: 4.7 days

The month with the highest number of rainy days is March (12.4 days).
The month with the least rainy days is August (1.2 days).

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

Average daylight in May / Average sunshine in May - Sacramento, CA
  • Average daylight in May: 14h and 2min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in May: 10h and 5min

The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).

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Average sunshine days in May
Sacramento, CA

Average sunshine days in May - Sacramento, CA
  • Average sunshine days in May: 25.3 days

The month with the most sunshine days is July (29.4 days).
The month with the least sunshine days is March (17.7 days).

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Average UV index in May
Sacramento, CA

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

The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).

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Average cloud cover in May
Sacramento, CA

Average cloud cover in May - Sacramento, CA
  • Average cloud cover in May: 23

The month with the most cloud cover is March (Cloud cover 40).
The month with the least cloud cover is July (Cloud cover 6).

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Average visibility in May
Sacramento, CA

Average visibility in May - Sacramento, 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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Sacramento, California, USA

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