May weather forecastCeres, WA
May
Weather in May
The last month of the spring, May, is a comfortable month in Ceres, Washington, with an average temperature ranging between min 40.8°F (4.9°C) and max 64.8°F (18.2°C).Temperature
May witnesses a subtle temperature ascent, adjusting from a mild 56.1°F (13.4°C) in April to a still refreshing 64.8°F (18.2°C). The May nights bear witness to a significant drop from the daytime highs, settling at an average temperature of 40.8°F (4.9°C).Humidity
In May, the average relative humidity is 78%.Rainfall
In Ceres, in May, during 14.6 rainfall days, 2.09" (53mm) of precipitation is typically accumulated. In Ceres, Washington, during the entire year, the rain falls for 185.5 days and collects up to 36.1" (917mm) of precipitation.Snowfall
April through October are months without snowfall in Ceres.Daylight
In Ceres, the average length of the day in May is 15h and 3min.On the first day of May, sunrise is at 5:56 am and sunset at 8:22 pm. On the last day of the month, sunrise is at 5:22 am and sunset at 8:57 pm PDT.
Sunshine
The average sunshine in May is 8h.UV index
In Ceres, the average daily maximum UV index in May is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: A daily maximum UV index of 4 in May translates into the following instructions:
Exercise prevention - Protecting skin and eyes from harm is required. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Ceres, WA
- Average high temperature in May: 64.8°F
The warmest month (with the highest average high temperature) is August (77.5°F).
The month with the lowest average high temperature is December (42.6°F).
- Average low temperature in May: 40.8°F
The month with the highest average low temperature is August (50°F).
The coldest month (with the lowest average low temperature) is December (33.1°F).
Average pressure in May
Ceres, WA
- Average pressure in May: 30.04"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The months with the lowest atmospheric pressure are March, August and September (30.02"Hg).
Average wind speed in May
Ceres, WA
- Average wind speed in May: 4mph
The windiest months (with the highest average wind speed) are January, March and November (4.5mph).
The calmest month (with the lowest average wind speed) is September (3.6mph).
Average humidity in May
Ceres, WA
- Average humidity in May: 78%
The months with the highest relative humidity are January, February, November and December (89%).
The month with the lowest relative humidity is July (73%).
Average rainfall in May
Ceres, WA
- Average rainfall in May: 2.09"
The wettest month (with the highest rainfall) is January (5.51").
The driest month (with the least rainfall) is July (0.47").
Average rainfall days in May
Ceres, WA
- Average rainfall days in May: 14.6 days
The month with the highest number of rainy days is March (21.5 days).
The month with the least rainy days is August (6.4 days).
Average snowfall in May
Ceres, WA
- Average snowfall in May: 0"
The month with the highest snowfall is February (1.93").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in May
Ceres, WA
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (3.5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in May /
Average sunshine in May
Ceres, WA
- Average daylight in May: 15h and 0min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in May: 8h and 0min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is December (Average sunshine: 3h and 30min).
Average sunshine days in May
Ceres, WA
- Average sunshine days in May: 15 days
The months with the most sunshine days are July and August (20.8 days).
The month with the least sunshine days is February (7.6 days).
Average UV index in May
Ceres, WA
- Average UV index in May: 4
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in May
Ceres, WA
- Average cloud cover in May: 55
The months with the most cloud cover are January, February and December (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 38).
Average visibility in May
Ceres, WA
- Average visibility in May: 4mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (4mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (4mi).





