May weather forecastMolalla, OR
May
Weather in May
May, the last month of the spring in Molalla, is a comfortable month, with temperature in the range of an average high of 64°F (17.8°C) and an average low of 41.7°F (5.4°C).Temperature
May's onset is marked by a subtle temperature increase, moving from a mild 55.9°F (13.3°C) in April to a still refreshing 64°F (17.8°C). Molalla registers a significant drop in temperature in May, with average nighttime lows of 41.7°F (5.4°C).Humidity
The average relative humidity in May in Molalla is 76%.Rainfall
In Molalla, during May, the rain falls for 14.1 days and regularly aggregates up to 2.2" (56mm) of precipitation. Throughout the year, there are 175.6 rainfall days, and 36.1" (917mm) of precipitation is accumulated.Snowfall
May through October are months without snowfall in Molalla.Daylight
In Molalla, the average length of the day in May is 14h and 53min.On the first day of the month, sunrise is at 5:57 am and sunset at 8:16 pm. On the last day of May, sunrise is at 5:26 am and sunset at 8:50 pm PDT.
Sunshine
In Molalla, the average sunshine in May is 8.5h.UV index
In May, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.Note: In May, an average UV index of 4 transforms into the following instructions:
Heed the precautions - It is counselled to guard against solar damage. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Molalla, OR
- Average high temperature in May: 64°F
The warmest month (with the highest average high temperature) is August (79°F).
The month with the lowest average high temperature is December (43.7°F).
- Average low temperature in May: 41.7°F
The month with the highest average low temperature is August (51.1°F).
The coldest month (with the lowest average low temperature) is December (33.3°F).
Average pressure in May
Molalla, OR
- Average pressure in May: 30.03"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
Molalla, OR
- Average wind speed in May: 4.3mph
The windiest month (with the highest average wind speed) is January (6.3mph).
The calmest month (with the lowest average wind speed) is August (3.7mph).
Average humidity in May
Molalla, OR
- Average humidity in May: 76%
The months with the highest relative humidity are February and March (85%).
The month with the lowest relative humidity is August (66%).
Average rainfall in May
Molalla, OR
- Average rainfall in May: 2.2"
The wettest month (with the highest rainfall) is December (5.39").
The driest month (with the least rainfall) is July (0.28").
Average rainfall days in May
Molalla, OR
- Average rainfall days in May: 14.1 days
The month with the highest number of rainy days is March (20.7 days).
The month with the least rainy days is July (4.8 days).
Average snowfall in May
Molalla, OR
- Average snowfall in May: 0"
The month with the highest snowfall is February (2.28").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in May
Molalla, OR
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (2.9 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
Molalla, OR
- Average daylight in May: 14h and 54min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in May: 8h and 30min
The months with the most sunshine are July and August (Average sunshine: 11h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 0min).
Average sunshine days in May
Molalla, OR
- Average sunshine days in May: 15.8 days
The month with the most sunshine days is July (24.2 days).
The month with the least sunshine days is February (8.2 days).
Average UV index in May
Molalla, OR
- Average UV index in May: 4
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in May
Molalla, OR
- Average cloud cover in May: 48
The month with the most cloud cover is February (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 21).
Average visibility in May
Molalla, OR
- Average visibility in May: 5mi
The months with the highest visibility are August and September (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, October, November and December (5mi).





