Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
A gentle upsurge in temperatures occurs as April gives way to May, with average highs shifting from a mild 57°F (13.9°C) to an enjoyable 65.7°F (18.7°C). During May, Lacey reports a marked contrast from daily peak temperatures, with an average nighttime reading of 41.9°F (5.5°C).Humidity
In Lacey, the average relative humidity in May is 77%.Rainfall
In Lacey, during May, the rain falls for 13.5 days and regularly aggregates up to 1.77" (45mm) of precipitation. In Lacey, during the entire year, the rain falls for 177.4 days and collects up to 37.05" (941mm) of precipitation.Snowfall
In Lacey, snow does not fall in April through October.Daylight
In Lacey, the average length of the day in May is 15h and 5min.On the first day of the month, sunrise is at 5:53 am and sunset at 8:22 pm. On the last day of May, sunrise is at 5:19 am and sunset at 8:58 pm PDT.
Sunshine
In May, the average sunshine in Lacey is 8.1h.UV index
In May, the average daily maximum UV index in Lacey is 4. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for average individuals.Note: In May, the UV index of 4 transforms into the following advice:
Make use of precautions - It is urged to ward off sun damage. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Frequently asked questions
What are May temperatures in Lacey?
What is the average humidity in May in Lacey?
How many days does it rain in May in Lacey?
When it does not snow in Lacey?
What is the average length of the day in May in Lacey?
What time are sunrise and sunset in May in Lacey?
How long on average sun shines in May in Lacey?
What is the UV index reading in May in Lacey?
Average temperature in May
Lacey, WA
- Average high temperature in May: 65.7°F
The warmest month (with the highest average high temperature) is August (78.6°F).
The month with the lowest average high temperature is December (43°F).
- Average low temperature in May: 41.9°F
The month with the highest average low temperature is August (50.5°F).
The coldest month (with the lowest average low temperature) is December (33.4°F).
Average pressure in May
Lacey, WA
- Average pressure in May: 30.04"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is March (30.01"Hg).
Average wind speed in May
Lacey, WA
- Average wind speed in May: 4.3mph
The windiest months (with the highest average wind speed) are March and November (4.6mph).
The calmest month (with the lowest average wind speed) is September (3.8mph).
Average humidity in May
Lacey, WA
- Average humidity in May: 77%
The months with the highest relative humidity are January, November and December (89%).
The month with the lowest relative humidity is July (71%).
Average rainfall in May
Lacey, WA
- Average rainfall in May: 1.77"
The wettest month (with the highest rainfall) is December (5.79").
The driest month (with the least rainfall) is July (0.39").
Average rainfall days in May
Lacey, WA
- Average rainfall days in May: 13.5 days
The month with the highest number of rainy days is March (20.4 days).
The month with the least rainy days is August (5.5 days).
Average snowfall in May
Lacey, WA
- Average snowfall in May: 0"
The month with the highest snowfall is February (2.32").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in May
Lacey, WA
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (3.3 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
Lacey, WA
- Average daylight in May: 15h and 1min
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 1min
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 24min).
Average sunshine days in May
Lacey, WA
- Average sunshine days in May: 15.8 days
The month with the most sunshine days is August (22.4 days).
The month with the least sunshine days is February (8.4 days).
Average UV index in May
Lacey, WA
- Average UV index in May: 4
The months with the highest UV index are June and 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
Lacey, WA
- Average cloud cover in May: 53
The months with the most cloud cover are January and December (Cloud cover 65).
The months with the least cloud cover are July and August (Cloud cover 35).
Average visibility in May
Lacey, WA
- Average visibility in May: 4mi
The months with the highest visibility are June, July and August (5mi).
The months with the lowest visibility are January, February, March, April, May, September, October, November and December (4mi).
Lacey, Washington, USA
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