May weather forecastLyman, WA
May
Weather in May
The last month of the spring, May, is a mild month in Lyman, Washington, with temperature in the range of an average high of 60.6°F (15.9°C) and an average low of 42.8°F (6°C).Temperature
Lyman in May experiences a slight uptick in the average high-temperature, adjusting from April's fresh 52°F (11.1°C) to a mild 60.6°F (15.9°C). In the month of May, an average of 42.8°F (6°C) marks the low-temperature.Humidity
The average relative humidity in May is 79%.Rainfall
In Lyman, in May, it is raining for 16.1 days, with typically 2.91" (74mm) of accumulated precipitation. Throughout the year, there are 203.2 rainfall days, and 49.72" (1263mm) of precipitation is accumulated.Snowfall
In Lyman, snow does not fall in May through October.Daylight
In May, the average length of the day is 15h and 16min.On the first day of May, sunrise is at 5:46 am and sunset at 8:23 pm. On the last day of the month, sunrise is at 5:10 am and sunset at 9:01 pm PDT.
Sunshine
In Lyman, the average sunshine in May is 8.6h.UV index
In May, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: The UV index of 3 during May translates into the following guidance:
Exercise prevention - Warding off sunburn is urged. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Lyman, WA
- Average high temperature in May: 60.6°F
The warmest month (with the highest average high temperature) is July (70.9°F).
The month with the lowest average high temperature is December (40.5°F).
- Average low temperature in May: 42.8°F
The month with the highest average low temperature is August (50.5°F).
The coldest months (with the lowest average low temperature) are February and December (32.5°F).
Average pressure in May
Lyman, WA
- Average pressure in May: 30.01"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).
Average wind speed in May
Lyman, WA
- Average wind speed in May: 3.9mph
The windiest month (with the highest average wind speed) is November (5.7mph).
The calmest month (with the lowest average wind speed) is August (3.3mph).
Average humidity in May
Lyman, WA
- Average humidity in May: 79%
The months with the highest relative humidity are January, February and March (86%).
The month with the lowest relative humidity is July (75%).
Average rainfall in May
Lyman, WA
- Average rainfall in May: 2.91"
The wettest month (with the highest rainfall) is November (7.09").
The driest month (with the least rainfall) is July (0.98").
Average rainfall days in May
Lyman, WA
- Average rainfall days in May: 16.1 days
The month with the highest number of rainy days is March (22.1 days).
The month with the least rainy days is August (9.4 days).
Average snowfall in May
Lyman, WA
- Average snowfall in May: 0"
The month with the highest snowfall is February (4.96").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in May
Lyman, WA
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (4.3 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
Lyman, WA
- Average daylight in May: 15h and 18min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in May: 8h and 36min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is December (Average sunshine: 3h and 30min).
Average sunshine days in May
Lyman, WA
- Average sunshine days in May: 12.7 days
The month with the most sunshine days is August (19.2 days).
The month with the least sunshine days is March (7.3 days).
Average UV index in May
Lyman, WA
- Average UV index in May: 3
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in May
Lyman, WA
- Average cloud cover in May: 46
The month with the most cloud cover is December (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in May
Lyman, WA
- Average visibility in May: 5mi
The months with the highest visibility are June, July and August (6mi).
The months with the lowest visibility are January, February, March, April, May, September, October, November and December (5mi).
