Hermiston
Oregon, USA
Long-term weather forecast
Long-term weather forecast

May weather forecast and climate
Hermiston, OR

May, the last month of the spring, in Hermiston, is a warm month, with average temperature ranging between min 45.7°F (7.6°C) and max 75.2°F (24°C).

Temperature

In Hermiston, the average high-temperature slightly increases, from a comfortable 66.9°F (19.4°C) in April, to a warm 75.2°F (24°C). In May, the average low-temperature is 45.7°F (7.6°C).

Rainfall

In May, in Hermiston, the rain falls for 5 days. Throughout May, 0.6" (16.5mm) of precipitation is accumulated. Throughout the year, in Hermiston, there are 77 rainfall days, and 8.8" (224.6mm) of precipitation is accumulated.

Snowfall

Throughout the year, in Hermiston, 11.2" (284.6mm) of snow is accumulated.

Daylight

The average length of the day in May in Hermiston is 15h.

What is the temperature in May in Hermiston?

In May, in Hermiston, Oregon, the average high-temperature is 75.2°F (24°C), and the average low-temperature is 45.7°F (7.6°C).

How much does it rain in Hermiston in May?

In Hermiston, Oregon, in May, it is raining for 5 days, with typically 0.6" (16.5mm) of accumulated precipitation.

What is the average length of the day in May in Hermiston?

The average length of the day in May in Hermiston is 15h.
Average temperature in May - Hermiston, OR
  • Average high temperature in May: 75.2°F

The warmest month (with the highest average high temperature) is July (90.4°F).
The month with the lowest average high temperature is January (39.9°F).

  • Average low temperature in May: 45.6°F

The month with the highest average low temperature is July (57.1°F).
The coldest month (with the lowest average low temperature) is January (23.6°F).

Average rainfall in May - Hermiston, OR
  • Average rainfall in May: 0.7"

Wettest months (with the highest rainfall) are January, November and December (1.2").
The driest month (with the lowest rainfall) is July (0.2").

Average rainfall days in May - Hermiston, OR
  • Average rainfall days in May: 5 days

The month with the highest number of rainy days is December (11 days).
Months with the lowest number of rainy days are July and August (2 days).

Average snowfall in May - Hermiston, OR
  • Average snowfall in May: 0"

The month with the highest snowfall is January (5").
Months with the lowest snowfall are April, May, June, July, August, September and October (0").

Average daylight in May - Hermiston, OR
  • Average daylight in May: 15h

The month with the longest days is June (Average daylight: 15.7h).
The month with shortest days is December (Average daylight: 8.7h).