May weather forecastWestfall, OR
May
Weather in May
May, the last month of the spring in Westfall, is a pleasant month, with an average temperature varying between 47.1°F (8.4°C) and 70°F (21.1°C).Temperature
Noticing a change, the average high-temperature during May moves from April's moderate 59.5°F (15.3°C) to a pleasant 70°F (21.1°C). Westfall registers a marked temperature plunge to a frosty 47.1°F (8.4°C) during the cool May nights.Humidity
The average relative humidity in May is 46%.Rainfall
The months with the most rainfall are March and May, with an average 0.39" (10mm) of precipitation.Snowfall
May through October are months without snowfall.Daylight
In May, the average length of the day is 14h and 47min.On the first day of May, sunrise is at 6:41 am and sunset at 8:54 pm. On the last day of the month, sunrise is at 6:10 am and sunset at 9:26 pm MDT.
Sunshine
In Westfall, the average sunshine in May is 11.3h.UV index
In Westfall, Oregon, the average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for average individuals.Note: In May, a regular UV index of 5 translates into these guidelines:
Put precautions into practice - Guidance to elude sunburn is provided. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Westfall, OR
- Average high temperature in May: 70°F
The warmest month (with the highest average high temperature) is July (91°F).
The month with the lowest average high temperature is December (34.3°F).
- Average low temperature in May: 47.1°F
The month with the highest average low temperature is August (63.5°F).
The coldest months (with the lowest average low temperature) are January and December (22.1°F).
Average pressure in May
Westfall, OR
- Average pressure in May: 29.94"Hg
The month with the highest atmospheric pressure is January (30.24"Hg).
The month with the lowest atmospheric pressure is August (29.92"Hg).
Average wind speed in May
Westfall, OR
- Average wind speed in May: 6.9mph
The windiest month (with the highest average wind speed) is April (7.1mph).
The calmest month (with the lowest average wind speed) is January (3.9mph).
Average humidity in May
Westfall, OR
- Average humidity in May: 46%
The month with the highest relative humidity is January (83%).
The months with the lowest relative humidity are July and August (28%).
Average rainfall in May
Westfall, OR
- Average rainfall in May: 0.39"
The wettest months (with the highest rainfall) are March and May (0.39").
The driest months (with the least rainfall) are July and August (0.08").
Average rainfall days in May
Westfall, OR
- Average rainfall days in May: 5.4 days
The month with the highest number of rainy days is March (8.4 days).
The month with the least rainy days is August (2.3 days).
Average snowfall in May
Westfall, OR
- Average snowfall in May: 0"
The month with the highest snowfall is December (1.77").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in May
Westfall, OR
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is December (6.1 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
Westfall, OR
- Average daylight in May: 14h and 48min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in May: 11h and 18min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 12min).
Average sunshine days in May
Westfall, OR
- Average sunshine days in May: 23.8 days
The month with the most sunshine days is July (26.8 days).
The month with the least sunshine days is March (20.1 days).
Average UV index in May
Westfall, OR
- 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
Westfall, OR
- Average cloud cover in May: 24
The months with the most cloud cover are January and December (Cloud cover 43).
The months with the least cloud cover are July and August (Cloud cover 8).
Average visibility in May
Westfall, OR
- Average visibility in May: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (5mi).
