May weather forecast
Fresno, CA

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The artificial Millerton Lake near Fresno in California
The artificial Millerton Lake near Fresno in California

Weather in May

May ushers in the comfortable embrace of a warm early-summer atmosphere. The month is characterized by significant upswing in temperatures, complemented by extended sunshine hours. Rainfall plunges to 0.79 in, marking a move towards drier days ahead. The improved conditions lead to a drop in relative humidity, ensuring warm and uncomplicated weather that makes May the gateway to summer. As evidenced, the weather change in May is quite perceptible, transitioning from the pleasant spring climate to the upcoming summer heat.

Temperature

Fresno's weather in May presents a minor rise in the average high-temperature, moving from an agreeable 72.3°F in April to a moderately hot 81°F. Despite the drastic temperature difference, Fresno records an average nighttime low of 55.9°F throughout May.

Heat index

For most parts of May, the heat index is appraised at 80.6°F. Exposure and extended activity could potentially cause a state of fatigue and lead to heat cramps.
Records show heat index calculations are tailored for shaded regions and mild winds. Direct sunlight might cause an increase of up to 15 Fahrenheit (8 Celsius) degrees in the heat index.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', measures the perceived warmth when incorporating the humidity present in the air. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and physical exertion. Should you be directly under the sun, anticipate a possible increase in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Young ones are generally at greater risk than adults due to their limited sweating ability. In addition, their large skin surface relative to their small bodies and higher heat production from their activities add to their vulnerability.

Humidity

In May, the average relative humidity in Fresno, California, is 44%.

Rainfall

In Fresno, in May, during 4.8 rainfall days, 0.79" of precipitation is typically accumulated. In Fresno, during the entire year, the rain falls for 59.3 days and collects up to 10.43" of precipitation.

Daylight

In Fresno, the average length of the day in May is 14h and 9min.
On the first day of the month, sunrise is at 6:04 am and sunset at 7:47 pm. On the last day of May, in Fresno, California, sunrise is at 5:41 am and sunset at 8:11 pm PDT.

Sunshine

In May, the average sunshine in Fresno, California, is 11.6h.

UV index

In May, the average daily maximum UV index in Fresno, California, is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 6 in May interprets into the following advice:
Guard oneself from overexposure. Defence against sun injury is vital. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
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FAQ

What is the usual temperature for Fresno in May?

The high-temperature in Fresno, California, during May is 81°F and the low-temperature is 55.9°F. In May, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which combines air temperature and relative humidity, is appraised at 80.6°F.

What is the average humidity in May in Fresno?

In Fresno, the average relative humidity in May is 44%.

How many days does it rain in May in Fresno?

In Fresno, in May, it is raining for 4.8 days, with typically 0.79" of accumulated precipitation.

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

The average day length in May is 14h and 9min.

What time are sunrise and sunset in May in Fresno?

On the first day of May in Fresno, California, sunrise is at 6:04 am and sunset at 7:47 pm. On the last day of the month, sunrise is at 5:41 am and sunset at 8:11 pm PDT.

How many hours of sunshine does Fresno have in May?

In Fresno, the average sunshine duration in May is 11.6h.

How high is the UV index in May in Fresno?

The average daily maximum UV index in May is 6. A UV Index of 6 to 7 symbolizes a high health threat from exposure to the Sun's UV radiation.
Average high temperature
Average low temperature
Average pressure
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Fresno, CA

Average temperature in May - Fresno, CA
  • Average high temperature in May: 81°F

The warmest month (with the highest average high temperature) is July (99.7°F).
The month with the lowest average high temperature is December (56.1°F).

  • Average low temperature in May: 55.9°F

The month with the highest average low temperature is July (67.3°F).
The coldest month (with the lowest average low temperature) is December (41.4°F).

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Average pressure in May
Fresno, CA

Average pressure in May - Fresno, CA
  • Average pressure in May: 29.94"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).

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Average wind speed in May
Fresno, CA

Average wind speed in May - Fresno, CA
  • Average wind speed in May: 5.5mph

The windiest month (with the highest average wind speed) is June (5.8mph).
The calmest month (with the lowest average wind speed) is November (3.8mph).

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Average humidity in May
Fresno, CA

Average humidity in May - Fresno, CA
  • Average humidity in May: 44%

The month with the highest relative humidity is January (65%).
The month with the lowest relative humidity is July (28%).

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Average rainfall in May
Fresno, CA

Average rainfall in May - Fresno, CA
  • Average rainfall in May: 0.79"

The wettest month (with the highest rainfall) is March (2.01").
The driest months (with the least rainfall) are June and August (0.08").

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Average rainfall days in May
Fresno, CA

Average rainfall days in May - Fresno, CA
  • Average rainfall days in May: 4.8 days

The month with the highest number of rainy days is March (10.3 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
Fresno, CA

Average daylight in May / Average sunshine in May - Fresno, CA
  • Average daylight in May: 14h and 1min

The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).

  • Average sunshine in May: 11h and 4min

The months with the most sunshine are June, July and August (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 30min).

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Average sunshine days in May
Fresno, CA

Average sunshine days in May - Fresno, CA
  • Average sunshine days in May: 24.9 days

The month with the most sunshine days is August (28.2 days).
The month with the least sunshine days is March (19.5 days).

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Average UV index in May
Fresno, CA

Average UV index in May - Fresno, CA
  • Average UV index in May: 6

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

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Average cloud cover in May
Fresno, CA

Average cloud cover in May - Fresno, CA
  • Average cloud cover in May: 15

The month with the most cloud cover is March (Cloud cover 27).
The month with the least cloud cover is August (Cloud cover 4).

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Average visibility in May
Fresno, CA

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

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