May weather forecast
John Day, OR

Share
The iconic Painted Hills in the famous John Day Fossil Beds National Monument, Oregon
The iconic Painted Hills in the famous John Day Fossil Beds National Monument, Oregon

Weather in May

May carries the warmth of spring into John Day, Oregon, promising pleasant weather conditions. Rainfall measures 1.65" (42mm), making it relatively drier compared to the preceding months. With the rise in temperature, outdoor activities become more popular among residents and tourists. The ambient pressure tends to slightly drop in May, although weather changes remain subtle. Despite this, gusty winds might occasionally sweep through the town, keeping the heat at bay.

Temperature

May shows a rise in the average high-temperature, moving from April's fresh 50.4°F (10.2°C) to an enjoyable 61.3°F (16.3°C). John Day in May observes a substantial swing from the daily highs, with average nighttime temperatures of 36.1°F (2.3°C).

Humidity

In John Day, Oregon, the average relative humidity in May is 63%.

Rainfall

In John Day, during May, the rain falls for 14.8 days and regularly aggregates up to 1.65" (42mm) of precipitation. In John Day, during the entire year, the rain falls for 127.7 days and collects up to 17.09" (434mm) of precipitation.

Snowfall

Months with snowfall are January through May, September through December. May is the last month it regularly snows in John Day. During 1.3 snowfall days, in May, John Day aggregates 0.28" (7mm) of snow. Throughout the year, in John Day, there are 62.5 snowfall days, and 39.17" (995mm) of snow is accumulated.

Daylight

In John Day, the average length of the day in May is 14h and 49min.
On the first day of the month, sunrise is at 5:45 am and sunset at 8:00 pm. On the last day of May, sunrise is at 5:14 am and sunset at 8:32 pm PDT.

Sunshine

In John Day, the average sunshine in May is 10.8h.

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 the ordinary person.
Note: An average UV index of 4 in May transforms into this advice:
Exercise care. People with light skin might get burns in fewer than 30 minutes. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
[Resources]

Frequently asked questions

What are May temperatures in John Day?

An average high-temperature, in May, in John Day, is 61.3°F (16.3°C) and the average low-temperature is 36.1°F (2.3°C).

What is the average humidity in May in John Day?

In May, the average relative humidity in John Day, Oregon, is 63%.

How much does it rain in John Day in May?

In John Day, Oregon, during May, the rain falls for 14.8 days and regularly aggregates up to 1.65" (42mm) of precipitation.

What is the last month it snows in John Day?

May is the last month it regularly snows in John Day, Oregon. During 1.3 snowfall days, in May, John Day aggregates 0.28" (7mm) of snow.

How many hours of daylight does John Day have in May?

The average day length in May is 14h and 49min.

When is the sunrise / sunset in May in John Day?

On the first day of May in John Day, sunrise is at 5:45 am and sunset at 8:00 pm. On the last day of the month, sunrise is at 5:14 am and sunset at 8:32 pm PDT.

How long on average sun shines in May in John Day?

In John Day, the average sunshine duration in May is 10.8h.

How high is the UV index in May in John Day?

In John Day, the average daily maximum UV index in May is 4. A UV Index reading of 3 to 5 represents a medium health risk from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
John Day, OR

Average temperature in May - John Day, OR
  • Average high temperature in May: 61.3°F

The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is December (33.4°F).

  • Average low temperature in May: 36.1°F

The month with the highest average low temperature is August (49.6°F).
The coldest month (with the lowest average low temperature) is December (19.6°F).

[Resources]

Average pressure in May
John Day, OR

Average pressure in May - John Day, OR
  • Average pressure in May: 29.96"Hg

The month with the highest atmospheric pressure is January (30.22"Hg).
The month with the lowest atmospheric pressure is August (29.93"Hg).

[Resources]

Average wind speed in May
John Day, OR

Average wind speed in May - John Day, OR
  • Average wind speed in May: 5.7mph

The windiest month (with the highest average wind speed) is April (6.2mph).
The calmest months (with the lowest average wind speed) are August and September (5mph).

[Resources]

Average humidity in May
John Day, OR

Average humidity in May - John Day, OR
  • Average humidity in May: 63%

The month with the highest relative humidity is February (85%).
The month with the lowest relative humidity is August (42%).

[Resources]

Average rainfall in May
John Day, OR

Average rainfall in May - John Day, OR
  • Average rainfall in May: 1.65"

The wettest month (with the highest rainfall) is February (2.28").
The driest month (with the least rainfall) is July (0.24").

[Resources]

Average rainfall days in May
John Day, OR

Average rainfall days in May - John Day, OR
  • Average rainfall days in May: 14.8 days

The month with the highest number of rainy days is March (17.3 days).
The month with the least rainy days is August (3.3 days).

[Resources]

Average snowfall in May
John Day, OR

Average snowfall in May - John Day, OR
  • Average snowfall in May: 0.28"

The month with the highest snowfall is February (10.31").
The months with the least snowfall are June, July and August (0").

[Resources]

Average snowfall days in May
John Day, OR

Average snowfall days in May - John Day, OR
  • Average snowfall days in May: 1.3 days

The month with the highest number of snowfall days is December (14.5 days).
The months with the least snowfall days are June, July and August (0 days).

[Resources]

Average daylight in May /
Average sunshine in May
John Day, OR

Average daylight in May / Average sunshine in May - John Day, OR
  • Average daylight in May: 14h and 5min

The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).

  • Average sunshine in May: 10h and 5min

The month with the most sunshine is August (Average sunshine: 12h and 6min).
The months with the least sunshine are January and February (Average sunshine: 5h and 12min).

[Resources]

Average sunshine days in May
John Day, OR

Average sunshine days in May - John Day, OR
  • Average sunshine days in May: 13.8 days

The month with the most sunshine days is July (24.9 days).
The month with the least sunshine days is February (9 days).

[Resources]

Average UV index in May
John Day, OR

Average UV index in May - John Day, 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, October, November and December (UV index 2).

[Resources]

Average cloud cover in May
John Day, OR

Average cloud cover in May - John Day, OR
  • Average cloud cover in May: 31

The month with the most cloud cover is February (Cloud cover 49).
The months with the least cloud cover are July and August (Cloud cover 9).

[Resources]

Average visibility in May
John Day, OR

Average visibility in May - John Day, OR
  • Average visibility in May: 6mi

The months with the highest visibility are April, May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February and December (4mi).

[Resources]

John Day, Oregon, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location