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
The shift into May is characterized by a subtle rise in the average high-temperature, transitioning from April's moderate 57.6°F (14.2°C) to an enjoyable 65.3°F (18.5°C). Winston documents a substantial shift from daytime warmth, recording an average nighttime temperature of 38.7°F (3.7°C) in May.Humidity
In May, the average relative humidity is 79%.Rainfall
In Winston, during May, the rain falls for 12.3 days and regularly aggregates up to 1.85" (47mm) of precipitation. In Winston, during the entire year, the rain falls for 148.4 days and collects up to 25" (635mm) of precipitation.Snowfall
April through October are months without snowfall.Daylight
In Winston, the average length of the day in May is 14h and 41min.On the first day of the month, sunrise is at 6:05 am and sunset at 8:15 pm. On the last day of May, sunrise is at 5:36 am and sunset at 8:46 pm PDT.
Sunshine
In Winston, Oregon, the average sunshine in May is 8.3h.UV index
In May, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for average individuals.Note: A typical high UV index of 4 in May suggests the following recommendations:
Undertake precautions - It is suggested to shield oneself from sunburn. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average May temperature in Winston?
What is the average humidity in May?
How many days does it rain in May?
When it does not snow?
How many hours of daylight does Winston have in May?
When is the sunrise / sunset in May?
How long on average sun shines in May?
How high is the UV index in May?
Average temperature in May
Winston, OR
- Average high temperature in May: 65.3°F
The warmest month (with the highest average high temperature) is August (81°F).
The month with the lowest average high temperature is December (46.2°F).
- Average low temperature in May: 38.7°F
The month with the highest average low temperature is August (47.5°F).
The coldest month (with the lowest average low temperature) is December (32.9°F).
Average pressure in May
Winston, OR
- Average pressure in May: 30.04"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).
Average wind speed in May
Winston, OR
- Average wind speed in May: 3.7mph
The windiest month (with the highest average wind speed) is January (4mph).
The calmest months (with the lowest average wind speed) are September and October (3.2mph).
Average humidity in May
Winston, OR
- Average humidity in May: 79%
The months with the highest relative humidity are February and December (87%).
The months with the lowest relative humidity are July and August (71%).
Average rainfall in May
Winston, OR
- Average rainfall in May: 1.85"
The wettest month (with the highest rainfall) is December (3.74").
The driest month (with the least rainfall) is August (0.2").
Average rainfall days in May
Winston, OR
- Average rainfall days in May: 12.3 days
The month with the highest number of rainy days is March (19.4 days).
The month with the least rainy days is July (3.5 days).
Average snowfall in May
Winston, OR
- Average snowfall in May: 0"
The month with the highest snowfall is February (1.26").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in May
Winston, OR
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (1.8 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
Winston, OR
- Average daylight in May: 14h and 4min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in May: 8h and 2min
The months with the most sunshine are July and August (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 4h and 12min).
Average sunshine days in May
Winston, OR
- Average sunshine days in May: 15.3 days
The month with the most sunshine days is August (26.2 days).
The month with the least sunshine days is March (9.7 days).
Average UV index in May
Winston, OR
- Average UV index in May: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in May
Winston, OR
- Average cloud cover in May: 51
The month with the most cloud cover is March (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in May
Winston, OR
- 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).
Winston, Oregon, USA
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