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
Rochester observes a slight uplift in the average high-temperature with the onset of May, adjusting from April's refreshing 56.7°F (13.7°C) to a comfortable 64.9°F (18.3°C). Rochester's temperature exhibits a stark contrast from daytime to nighttime, averaging lows of 41.2°F (5.1°C) in May.Humidity
In May, the average relative humidity in Rochester is 78%.Rainfall
In May, in Rochester, the rain falls for 13.4 days. Throughout May, 1.34" (34mm) of precipitation is accumulated. In Rochester, Washington, during the entire year, the rain falls for 168 days and collects up to 23.94" (608mm) of precipitation.Snowfall
In Rochester, snow does not fall in April through October.Daylight
The average length of the day in May in Rochester, Washington, is 15h and 4min.On the first day of May in Rochester, sunrise is at 5:55 am and sunset at 8:23 pm. On the last day of the month, sunrise is at 5:21 am and sunset at 8:58 pm PDT.
Sunshine
The average sunshine in May in Rochester, Washington, is 8h.UV index
The average daily maximum UV index in May is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.Note: The UV index of 4 in May translates into these instructions:
Undertake protective steps - Preventing sun damage is advised. Around midday, solar radiation is most harmful; hence, exposure should be limited. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Frequently asked questions
What is the average May temperature in Rochester?
What is the average humidity in May in Rochester?
How many days does it rain in May in Rochester?
When it does not snow in Rochester?
What is the average length of the day in May in Rochester?
When are sunrise and sunset in May in Rochester?
How many hours of sunshine does Rochester have in May?
What is the UV index reading in May in Rochester?
Average temperature in May
Rochester, WA
- Average high temperature in May: 64.9°F
The warmest month (with the highest average high temperature) is August (77.4°F).
The month with the lowest average high temperature is December (42.6°F).
- Average low temperature in May: 41.2°F
The month with the highest average low temperature is August (49.8°F).
The coldest month (with the lowest average low temperature) is December (33.1°F).
Average pressure in May
Rochester, 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
Rochester, 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
Rochester, WA
- Average humidity in May: 78%
The month with the highest relative humidity is November (90%).
The month with the lowest relative humidity is July (73%).
Average rainfall in May
Rochester, WA
- Average rainfall in May: 1.34"
The wettest month (with the highest rainfall) is January (3.86").
The driest month (with the least rainfall) is July (0.35").
Average rainfall days in May
Rochester, WA
- Average rainfall days in May: 13.4 days
The month with the highest number of rainy days is March (19.8 days).
The month with the least rainy days is August (5.6 days).
Average snowfall in May
Rochester, WA
- Average snowfall in May: 0"
The month with the highest snowfall is February (1.54").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in May
Rochester, WA
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (2.7 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
Rochester, 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 0min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is December (Average sunshine: 3h and 30min).
Average sunshine days in May
Rochester, WA
- Average sunshine days in May: 14.8 days
The month with the most sunshine days is August (20.9 days).
The months with the least sunshine days are February and March (9.3 days).
Average UV index in May
Rochester, 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
Rochester, WA
- Average cloud cover in May: 55
The month with the most cloud cover is January (Cloud cover 66).
The months with the least cloud cover are July and August (Cloud cover 38).
Average visibility in May
Rochester, WA
- Average visibility in May: 4mi
The month with the highest visibility is July (5mi).
The months with the lowest visibility are January, February, March, April, May, June, August, September, October, November and December (4mi).
Rochester, Washington, USA
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