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
May comes with a subtle rise, with the average high-temperature adjusting from a fresh 55°F (12.8°C) in April to an enjoyable 63.5°F (17.5°C). Grand Rapids experiences a significant reduction from daytime highs with an average low-temperature of 41°F (5°C) in May.Humidity
In May, the average relative humidity is 79%.Rainfall
In May, the rain falls for 14.6 days. Throughout May, 2.17" (55mm) of precipitation is accumulated. Throughout the year, there are 184.4 rainfall days, and 36.61" (930mm) of precipitation is accumulated.Snowfall
May through October are months without snowfall.Daylight
In Grand Rapids, Oregon, the average length of the day in May is 14h and 58min.On the first day of the month, sunrise is at 5:59 am and sunset at 8:22 pm. On the last day of May, sunrise is at 5:27 am and sunset at 8:56 pm PDT.
Sunshine
In May, the average sunshine is 7.6h.UV index
In Grand Rapids, the average daily maximum UV index in May is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the average person.Note: The UV index of 4 in May translates into these instructions:
Take precautions - Protection against skin and eye damage is obliged. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in May?
What is the average humidity in May?
How much does it rain in May?
When it does not snow in Grand Rapids?
Does it snow in May?
What is the average length of the day in May?
When is the sunrise / sunset in May?
How many hours of sunshine does Grand Rapids have in May?
What is the UV index reading in May?
Average temperature in May
Grand Rapids, OR
- Average high temperature in May: 63.5°F
The warmest month (with the highest average high temperature) is August (77°F).
The month with the lowest average high temperature is December (42.1°F).
- Average low temperature in May: 41°F
The month with the highest average low temperature is August (50.7°F).
The coldest month (with the lowest average low temperature) is December (32.9°F).
Average pressure in May
Grand Rapids, OR
- Average pressure in May: 30.04"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The months with the lowest atmospheric pressure are August and September (30.02"Hg).
Average wind speed in May
Grand Rapids, OR
- Average wind speed in May: 4.3mph
The windiest months (with the highest average wind speed) are January, March and November (4.8mph).
The calmest month (with the lowest average wind speed) is September (3.9mph).
Average humidity in May
Grand Rapids, OR
- Average humidity in May: 79%
The month with the highest relative humidity is November (89%).
The month with the lowest relative humidity is July (73%).
Average rainfall in May
Grand Rapids, OR
- Average rainfall in May: 2.17"
The wettest month (with the highest rainfall) is January (5.79").
The driest months (with the least rainfall) are July and August (0.51").
Average rainfall days in May
Grand Rapids, OR
- Average rainfall days in May: 14.6 days
The month with the highest number of rainy days is March (21.7 days).
The month with the least rainy days is July (6 days).
Average snowfall in May
Grand Rapids, OR
- Average snowfall in May: 0"
The month with the highest snowfall is February (3.94").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in May
Grand Rapids, OR
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (4.4 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
Grand Rapids, OR
- Average daylight in May: 15h and 0min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in May: 7h and 4min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 3h and 18min).
Average sunshine days in May
Grand Rapids, OR
- Average sunshine days in May: 15.2 days
The month with the most sunshine days is July (22.1 days).
The months with the least sunshine days are February and March (7.6 days).
Average UV index in May
Grand Rapids, OR
- Average UV index in May: 4
The month with the highest UV index is 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
Grand Rapids, OR
- Average cloud cover in May: 55
The months with the most cloud cover are February and March (Cloud cover 67).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in May
Grand Rapids, OR
- Average visibility in May: 4mi
The months with the highest visibility are July and August (5mi).
The months with the lowest visibility are January, February, March, April, May, June, September, October, November and December (4mi).
Grand Rapids, Oregon, USA
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