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

Monthly weather forecast and climate
Hermiston, OR

January, like December, in Hermiston, Oregon, is a wintry winter month, with average temperature fluctuating between 23.5°F (-4.7°C) and 39.9°F (4.4°C). With an average high-temperature of 39.9°F (4.4°C) and an average low-temperature of 23.5°F (-4.7°C), January is the coldest month. Weather in January »
The last month of the winter, February, is a chilly month in Hermiston, Oregon, with average temperature ranging between min 27.9°F (-2.3°C) and max 47.7°F (8.7°C). In February, the average high-temperature slightly increases, from a cold 39.9°F (4.4°C) in January, to a chilly 47.7°F (8.7°C). Weather in February »

The first month of the spring, March, is a moderate month in Hermiston, Oregon, with average temperature ranging between min 32.9°F (0.5°C) and max 58.3°F (14.6°C). In March, the average high-temperature rises, from a frosty 47.7°F (8.7°C) in February, to a moderate 58.3°F (14.6°C). Weather in March »

April is an enjoyable spring month in Hermiston, Oregon, with average temperature ranging between max 66.9°F (19.4°C) and min 38.8°F (3.8°C). In Hermiston, the average high-temperature in April marginally rises, from a mild 58.3°F (14.6°C) in March, to an enjoyable 66.9°F (19.4°C). Weather in April »

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). 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). Weather in May »

The first month of the summer, June, is also a moderately hot month in Hermiston, Oregon, with average temperature ranging between max 82.6°F (28.1°C) and min 52.3°F (11.3°C). In Hermiston, the average high-temperature in June slightly increases, from 75.2°F (24°C) in May, to a still warm 82.6°F (28.1°C). Weather in June »

July in Hermiston, Oregon, is a tropical summer month, with average temperature varying between 57°F (13.9°C) and 90.3°F (32.4°C). The warmest month is July, with an average high-temperature of 90.3°F (32.4°C) and an average low-temperature of 57°F (13.9°C). Weather in July »

August, the last month of the summer, in Hermiston, is another tropical month, with average temperature fluctuating between 55.2°F (12.9°C) and 88.7°F (31.5°C). In August, the average high-temperature is essentially the same as in July - a still tropical 88.7°F (31.5°C). Weather in August »

September, the first month of the autumn, in Hermiston, is also a moderately hot month, with temperature in the range of an average high of 79.7°F (26.5°C) and an average low of 46.9°F (8.3°C). In Hermiston, Oregon, the average high-temperature drops, from a hot 88.7°F (31.5°C) in August, to a moderately hot 79.7°F (26.5°C). Weather in September »

October, like September, in Hermiston, Oregon, is another enjoyable autumn month, with average temperature ranging between min 37.9°F (3.3°C) and max 66.7°F (19.3°C). In October, the average high-temperature decreases, from a moderately hot 79.7°F (26.5°C) in September, to a comfortable 66.7°F (19.3°C). Weather in October »

November, the last month of the autumn, in Hermiston, is also a fresh month, with average temperature fluctuating between 50.7°F (10.4°C) and 31.1°F (-0.5°C). In Hermiston, the average high-temperature significantly decreases, from a comfortable 66.7°F (19.3°C) in October, to a fresh 50.7°F (10.4°C). Weather in November »

The first month of the winter, December, is still a cold month in Hermiston, Oregon, with average temperature fluctuating between 26.4°F (-3.1°C) and 41.7°F (5.4°C). In Hermiston, the average high-temperature drops, from a fresh 50.7°F (10.4°C) in November, to a wintry 41.7°F (5.4°C). Weather in December »

What is the coldest month in Hermiston?

With an average high-temperature of 39.9°F (4.4°C) and an average low-temperature of 23.5°F (-4.7°C), January is the coldest month.

How much does it rain in Hermiston?

In Hermiston, Oregon, during the entire year, the rain falls for 77 days and collects up to 8.8" (224.6mm) of precipitation.

What is the wettest month in Hermiston?

The wettest months in Hermiston, Oregon, are January and December, with an average 1.2" (31mm) of rainfall.

When does it snow in Hermiston?

Months with snowfall in Hermiston are January through March, November and December.

How much does it snow in Hermiston?

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

What is the snowiest month in Hermiston?

The month with the most snowfall in Hermiston, Oregon, is January when 5" (127mm) of snow is typically aggregated.

When are the longest days in Hermiston?

June has the longest days of the year in Hermiston, with an average of 15.7h of daylight.

What is the warmest month in Hermiston?

The warmest month is July, with an average high-temperature of 90.3°F (32.4°C) and an average low-temperature of 57°F (13.9°C).

What is the driest month in Hermiston?

The month with the least rainfall is July when the rain falls for 2 days and typically collects 0.2" (4.8mm) of precipitation.

What is the month with the shortest days in Hermiston?

December has the shortest days of the year in Hermiston, Oregon, with an average of 8.7h of daylight.
Average temperature - Hermiston, OR
Average rainfall - Hermiston, OR

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 - Hermiston, OR
Average snowfall - Hermiston, OR
Average daylight - Hermiston, OR

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