May weather forecast
Chico, CA

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Dense forest and a bridge crossing over the famed Big Chico Creek located in the Bidwell Park in Chico, California
Dense forest and a bridge crossing over the famed Big Chico Creek located in the Bidwell Park in Chico, California

Weather in May

The last month of the spring, May, is a warm month in Chico, California, with an average temperature ranging between max 76.6°F (24.8°C) and min 52.3°F (11.3°C).

Temperature

May's onset brings a temperature rise, moving from an enjoyable 67.6°F (19.8°C) in April to a moderately hot 76.6°F (24.8°C). In May, Chico endures a notable temperature shift from day to night, with lows averaging at a cool 52.3°F (11.3°C).

Humidity

In May, the average relative humidity is 52%.

Rainfall

In May, the rain falls for 8.1 days. Throughout May, 1.22" (31mm) of precipitation is accumulated. Throughout the year, there are 90.7 rainfall days, and 21.81" (554mm) of precipitation is accumulated.

Snowfall

In Chico, snow does not fall in January through November.

Daylight

In May, the average length of the day is 14h and 23min.
On the first day of the month, sunrise is at 6:06 am and sunset at 8:02 pm. On the last day of May, sunrise is at 5:41 am and sunset at 8:29 pm PDT.

Sunshine

The average sunshine in May is 11.2h.

UV index

The average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In May, the maximum UV index of 5 translates into these guidelines:
Act with care - The suggestion to avoid sunburn is emphasized. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
Updated: Aug 26, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are May temperatures?

The average high-temperature, in May, in Chico, is 76.6°F (24.8°C), while the average low-temperature is 52.3°F (11.3°C).

What is the average humidity in May?

The average relative humidity in May is 52%.

How much does it rain in May?

In May, the rain falls for 8.1 days. Throughout May, 1.22" (31mm) of precipitation is accumulated.

When it does not snow?

January through November are months without snowfall.

How many hours of daylight does Chico have in May?

In Chico, the average day length in May is 14h and 23min.

When is the sunrise / sunset in May?

In May, on the first day of the month, sunrise is at 6:06 am and sunset at 8:02 pm. On the last day of the month, sunrise is at 5:41 am and sunset at 8:29 pm PDT.

How long on average sun shines in May in Chico?

In May, the average sunshine duration is 11.2h.

What is the UV index intensity in May in Chico?

The average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a medium hazard to health 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 May
Chico, CA

Average temperature in May - Chico, CA
  • Average high temperature in May: 76.6°F

The warmest month (with the highest average high temperature) is July (95.2°F).
The month with the lowest average high temperature is December (53.2°F).

  • Average low temperature in May: 52.3°F

The month with the highest average low temperature is July (63.5°F).
The coldest month (with the lowest average low temperature) is December (39°F).

Average pressure in May
Chico, CA

Average pressure in May - Chico, CA
  • Average pressure in May: 29.95"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

Average wind speed in May
Chico, CA

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

The windiest month (with the highest average wind speed) is March (6.8mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).

Average humidity in May
Chico, CA

Average humidity in May - Chico, CA
  • Average humidity in May: 52%

The month with the highest relative humidity is March (72%).
The month with the lowest relative humidity is July (32%).

Average rainfall in May
Chico, CA

Average rainfall in May - Chico, CA
  • Average rainfall in May: 1.22"

The wettest month (with the highest rainfall) is February (3.94").
The driest month (with the least rainfall) is July (0.08").

Average rainfall days in May
Chico, CA

Average rainfall days in May - Chico, CA
  • Average rainfall days in May: 8.1 days

The month with the highest number of rainy days is March (15.2 days).
The month with the least rainy days is August (1.9 days).

Average snowfall in May
Chico, CA

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

The month with the highest snowfall is December (0.12").
The months with the least snowfall are January, February, March, April, May, June, July, August, September, October and November (0").

Average snowfall days in May
Chico, CA

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

The month with the highest number of snowfall days is December (0.4 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October and November (0 days).

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

Average daylight in May / Average sunshine in May - Chico, CA
  • Average daylight in May: 14h 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 24min).

  • Average sunshine in May: 11h and 1min

The month with the most sunshine is July (Average sunshine: 12h and 12min).
The months with the least sunshine are January and December (Average sunshine: 5h and 54min).

Average sunshine days in May
Chico, CA

Average sunshine days in May - Chico, CA
  • Average sunshine days in May: 20.5 days

The month with the most sunshine days is August (28.1 days).
The month with the least sunshine days is March (14.9 days).

Average UV index in May
Chico, CA

Average UV index in May - Chico, 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).

Average cloud cover in May
Chico, CA

Average cloud cover in May - Chico, CA
  • Average cloud cover in May: 20

The month with the most cloud cover is March (Cloud cover 38).
The month with the least cloud cover is July (Cloud cover 4).

Average visibility in May
Chico, CA

Average visibility in May - Chico, 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).

Chico, California, USA

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