May weather forecastCallahan, CA
May
Weather in May
The last month of the spring, May, is a refreshing month in Callahan, California, with an average temperature ranging between max 63.9°F (17.7°C) and min 38.8°F (3.8°C).Temperature
The arrival of May sees a shift in the average high-temperature, moving from a fresh 54.7°F (12.6°C) in April to a comfortable 63.9°F (17.7°C). May nights in Callahan, California, experience a distinct temperature drop from the daily highs, with an average low-temperature of 38.8°F (3.8°C).Humidity
The average relative humidity in May is 65%.Rainfall
In May, in Callahan, the rain falls for 12.8 days. Throughout May, 2.17" (55mm) of precipitation is accumulated. In Callahan, during the entire year, the rain falls for 107.9 days and collects up to 24.76" (629mm) of precipitation.Snowfall
January through May, September through December are months with snowfall. May is the last month it regularly snows. During 0.8 snowfall days, in May, Callahan aggregates 0.2" (5mm) of snow. In Callahan, during the entire year, snow falls for 47.5 days and aggregates up to 57.4" (1458mm) of snow.Daylight
The average length of the day in May is 14h and 31min.On the first day of the month, sunrise is at 6:07 am and sunset at 8:09 pm. On the last day of May, in Callahan, sunrise is at 5:40 am and sunset at 8:37 pm PDT.
Sunshine
In May, the average sunshine in Callahan, California, is 10.9h.UV index
The average daily maximum UV index in May is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 4 in May converts into the following recommendations:
Ensure safety - Sun damage prevention is strongly urged. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Callahan, CA
- Average high temperature in May: 63.9°F
The warmest month (with the highest average high temperature) is July (84.6°F).
The month with the lowest average high temperature is December (41°F).
- Average low temperature in May: 38.8°F
The month with the highest average low temperature is July (51.1°F).
The coldest month (with the lowest average low temperature) is December (27.1°F).
Average pressure in May
Callahan, CA
- Average pressure in May: 29.97"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is August (29.94"Hg).
Average wind speed in May
Callahan, CA
- Average wind speed in May: 5mph
The windiest month (with the highest average wind speed) is March (5.8mph).
The calmest month (with the lowest average wind speed) is August (3.9mph).
Average humidity in May
Callahan, CA
- Average humidity in May: 65%
The month with the highest relative humidity is March (81%).
The month with the lowest relative humidity is August (45%).
Average rainfall in May
Callahan, CA
- Average rainfall in May: 2.17"
The wettest month (with the highest rainfall) is March (4.17").
The driest months (with the least rainfall) are July and August (0.31").
Average rainfall days in May
Callahan, CA
- Average rainfall days in May: 12.8 days
The month with the highest number of rainy days is March (14.6 days).
The month with the least rainy days is August (3.1 days).
Average snowfall in May
Callahan, CA
- Average snowfall in May: 0.2"
The month with the highest snowfall is March (14.02").
The months with the least snowfall are June, July and August (0").
Average snowfall days in May
Callahan, CA
- Average snowfall days in May: 0.8 days
The month with the highest number of snowfall days is March (11.2 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in May /
Average sunshine in May
Callahan, CA
- Average daylight in May: 14h and 30min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in May: 10h and 54min
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 24min).
Average sunshine days in May
Callahan, CA
- Average sunshine days in May: 15.1 days
The month with the most sunshine days is August (24.1 days).
The month with the least sunshine days is March (10.9 days).
Average UV index in May
Callahan, CA
- Average UV index in May: 4
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in May
Callahan, CA
- Average cloud cover in May: 27
The month with the most cloud cover is March (Cloud cover 44).
The month with the least cloud cover is August (Cloud cover 7).
Average visibility in May
Callahan, CA
- Average visibility in May: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March and December (5mi).
