May weather forecastHarper, OR
May
Weather in May
The last month of the spring, May, is a pleasant month in Harper, Oregon, with an average temperature varying between 47.1°F (8.4°C) and 70°F (21.1°C).Temperature
May's arrival sees a rise in the average high-temperature, jumping from April's mild 59.5°F (15.3°C) to a pleasant 70°F (21.1°C). Harper records a consistent low-temperature average of 47.1°F (8.4°C) during May, indicating a significant difference from the daytime heat.Humidity
The average relative humidity in May is 46%.Rainfall
The wettest months are March and May, with an average 0.39" (10mm) of rainfall.Snowfall
In Harper, snow does not fall in May through October.Daylight
In May, the average length of the day is 14h and 46min.On the first day of the month, sunrise is at 6:40 am and sunset at 8:53 pm. On the last day of May, sunrise is at 6:11 am and sunset at 9:25 pm MDT.
Sunshine
In Harper, the average sunshine in May is 11.3h.UV index
The average daily maximum UV index in May in Harper is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: In May, the UV index of 5 transforms into the following advice:
Take precautions. Light skin individuals may get burned in less than 30 minutes. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Harper, 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
Harper, 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
Harper, 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
Harper, 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
Harper, 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
Harper, 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
Harper, 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
Harper, 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
Harper, 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
Harper, 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
Harper, 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
Harper, 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
Harper, 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).
