May weather forecastRitzville, WA
May
Weather in May
The last month of the spring, May, is a pleasant month in Ritzville, Washington, with temperature in the range of an average low of 47.8°F (8.8°C) and an average high of 68.4°F (20.2°C).Temperature
The onset of May marks an increase in the average high-temperature, moving from a moderate 57.9°F (14.4°C) in April to an agreeable 68.4°F (20.2°C). In Ritzville, the nighttime temperature averages to a chilly 47.8°F (8.8°C) during May.Humidity
The average relative humidity in May is 54%.Rainfall
In Ritzville, during May, the rain falls for 9.8 days and regularly aggregates up to 1.1" (28mm) of precipitation. In Ritzville, during the entire year, the rain falls for 109 days and collects up to 10.59" (269mm) of precipitation.Snowfall
May through August are months without snowfall.Daylight
In Ritzville, the average length of the day in May is 15h and 6min.On the first day of May, sunrise is at 5:35 am and sunset at 8:05 pm. On the last day of the month, sunrise is at 5:01 am and sunset at 8:40 pm PDT.
Sunshine
In May, the average sunshine is 10.6h.UV index
In May, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: An average UV index of 5 in May transforms into this advice:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Ritzville, WA
- Average high temperature in May: 68.4°F
The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is December (33.8°F).
- Average low temperature in May: 47.8°F
The month with the highest average low temperature is August (64.6°F).
The coldest month (with the lowest average low temperature) is December (25.2°F).
Average pressure in May
Ritzville, WA
- Average pressure in May: 29.94"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is August (29.9"Hg).
Average wind speed in May
Ritzville, WA
- Average wind speed in May: 8.5mph
The windiest month (with the highest average wind speed) is March (9.8mph).
The calmest month (with the lowest average wind speed) is August (7.3mph).
Average humidity in May
Ritzville, WA
- Average humidity in May: 54%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is August (34%).
Average rainfall in May
Ritzville, WA
- Average rainfall in May: 1.1"
The wettest month (with the highest rainfall) is March (1.38").
The driest months (with the least rainfall) are July and August (0.31").
Average rainfall days in May
Ritzville, WA
- Average rainfall days in May: 9.8 days
The month with the highest number of rainy days is March (13.6 days).
The month with the least rainy days is July (4.2 days).
Average snowfall in May
Ritzville, WA
- Average snowfall in May: 0"
The month with the highest snowfall is February (3.54").
The months with the least snowfall are May, June, July and August (0").
Average snowfall days in May
Ritzville, WA
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is December (7.8 days).
The months with the least snowfall days are May, June, July and August (0 days).
Average daylight in May /
Average sunshine in May
Ritzville, WA
- Average daylight in May: 15h and 6min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in May: 10h and 36min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 4h and 36min).
Average sunshine days in May
Ritzville, WA
- Average sunshine days in May: 18.8 days
The month with the most sunshine days is July (25.3 days).
The month with the least sunshine days is March (14.2 days).
Average UV index in May
Ritzville, WA
- Average UV index in May: 5
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in May
Ritzville, WA
- Average cloud cover in May: 29
The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 11).
Average visibility in May
Ritzville, WA
- Average visibility in May: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
