Climate and monthly weather forecast
Harrisburg, OR

Weather in January

January, the same as December, in Harrisburg, Oregon, is another chilly winter month, with an average temperature varying between 48.6°F (9.2°C) and 35.2°F (1.8°C). In January, the average high-temperature is almost the same as in December - a still chilly 48.6°F (9.2°C). Weather in January »

Weather in February

February, the last month of the winter in Harrisburg, is another chilly month, with an average temperature varying between 35.1°F (1.7°C) and 49.1°F (9.5°C). In Harrisburg, Oregon, the average high-temperature in February is practically the same as in January - a still frosty 49.1°F (9.5°C). Weather in February »

Weather in March

The first month of the spring, March, is a cool month in Harrisburg, Oregon, with an average temperature ranging between max 52.7°F (11.5°C) and min 36.7°F (2.6°C). In March, the average high-temperature is essentially the same as in February - a cool 52.7°F (11.5°C). Weather in March »

Weather in April

April in Harrisburg, Oregon, is a mild spring month, with an average temperature fluctuating between 57.7°F (14.3°C) and 37.6°F (3.1°C). In April, the average high-temperature is almost the same as in March - a moderate 57.7°F (14.3°C). Weather in April »

Weather in May

May, the last month of the spring in Harrisburg, is a comfortable month, with an average temperature fluctuating between 65.5°F (18.6°C) and 41.2°F (5.1°C). In May, the average high-temperature marginally rises from a mild 57.7°F (14.3°C) in April to a comfortable 65.5°F (18.6°C). Weather in May »

Weather in June

June, the first month of the summer in Harrisburg, is a pleasant month, with temperature in the range of an average low of 45.1°F (7.3°C) and an average high of 71.2°F (21.8°C). In June, the average high-temperature slightly increases from a comfortable 65.5°F (18.6°C) in May to a pleasant 71.2°F (21.8°C). Weather in June »

Weather in July

July in Harrisburg, Oregon, is a moderately hot summer month, with an average temperature ranging between min 49.8°F (9.9°C) and max 79.3°F (26.3°C). In Harrisburg, Oregon, the average high-temperature in July marginally rises from an agreeable 71.2°F (21.8°C) in June to a warm 79.3°F (26.3°C). Weather in July »

Weather in August

The last month of the summer, August, is another warm month in Harrisburg, Oregon, with temperature in the range of an average high of 81.1°F (27.3°C) and an average low of 51.1°F (10.6°C). The warmest month is August, with an average high-temperature of 81.1°F (27.3°C) and an average low-temperature of 51.1°F (10.6°C). In August, the average heat index is evaluated at 84.2°F (29°C). Weather in August »

Weather in September

September, the first month of the autumn in Harrisburg, is still a warm month, with an average temperature ranging between max 73.6°F (23.1°C) and min 48.6°F (9.2°C). In September, the average high-temperature slightly decreases from 81.1°F (27.3°C) in August to a still warm 73.6°F (23.1°C). Weather in September »

Weather in October

October, the same as September, is another comfortable autumn month in Harrisburg, Oregon, with an average temperature fluctuating between 62.2°F (16.8°C) and 43.7°F (6.5°C). In Harrisburg, the average high-temperature in October drops from a moderately hot 73.6°F (23.1°C) in September to a comfortable 62.2°F (16.8°C). Weather in October »

Weather in November

November, the last month of the autumn in Harrisburg, is also a fresh month, with temperature in the range of an average high of 51.6°F (10.9°C) and an average low of 38.8°F (3.8°C). In November, the average high-temperature drops from an enjoyable 62.2°F (16.8°C) in October to a cool 51.6°F (10.9°C). Weather in November »

Weather in December

December, the first month of the winter in Harrisburg, is also a frosty month, with an average temperature fluctuating between 45.7°F (7.6°C) and 34.2°F (1.2°C). The coldest month is December, with an average high-temperature of 45.7°F (7.6°C) and an average low-temperature of 34.2°F (1.2°C). Weather in December »
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FAQ

What is the most humid month in Harrisburg?

The months with the highest humidity are January through March and December, with an average relative humidity of 87%.

How much does it rain in Harrisburg?

In Harrisburg, Oregon, during the entire year, the rain falls for 161.8 days and collects up to 28.82" (732mm) of precipitation.

When does it snow in Harrisburg?

January through March, November and December are months with snowfall in Harrisburg.

How many days does it snow in Harrisburg?

In Harrisburg, Oregon, during the entire year, snow falls for 4.1 days and aggregates up to 2.87" (73mm) of snow.

What is the month with the lowest UV index in Harrisburg?

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Harrisburg.

When does it snow the most in Harrisburg?

The month with the most snowfall is February, when snow falls for 2 days and typically aggregates up to 1.81" (46mm) of snow.

What is the month with the least sunshine in Harrisburg?

With an average of 4h of sunshine, February has the least sunshine of the year in Harrisburg, Oregon.

When is Daylight Saving Time (DST) in Harrisburg?

On Sunday, March 12. 2023, at 2:00 am, Daylight Saving Time starts, and the time zone changes from PST to PDT. Daylight Saving Time ends Sunday, November 5. 2023, at 2:00 am, and the time zone reverts from PDT to PST.

When it does not snow in Harrisburg?

In Harrisburg, snow does not fall in April through October.

When are the longest days in Harrisburg?

The month with the longest days in Harrisburg, Oregon, is June, with an average of 15h and 28min of daylight.

What is the driest month in Harrisburg?

July is the month with the least rainfall. Rain falls for 4.1 days and accumulates 0.2" (5mm) of precipitation.

When is the highest UV index in Harrisburg?

July is the month with the highest UV index, with an average maximum UV index of 6.

What is the warmest month in Harrisburg?

The warmest month is August, with an average high-temperature of 81.1°F (27.3°C) and an average low-temperature of 51.1°F (10.6°C).

What is the least humid month in Harrisburg?

The least humid month is August, with an average relative humidity of 68%.

What month has the most sunshine in Harrisburg?

With an average of 11.1h of sunshine, August has the most sunshine of the year in Harrisburg, Oregon.

What is the coldest month in Harrisburg?

The coldest month in Harrisburg, Oregon, is December, with an average high-temperature of 45.7°F (7.6°C) and an average low-temperature of 34.2°F (1.2°C).

What is the rainiest month in Harrisburg?

The month with the most rainfall in Harrisburg is December, when the rain falls for 18.2 days and typically aggregates up to 4.37" (111mm) of precipitation.

What is the month with the shortest days in Harrisburg?

With an average of 8h and 55min of daylight, December has the shortest days of the year in Harrisburg.

Average temperature
Harrisburg, OR

Average temperature - Harrisburg, OR

The warmest month (with the highest average high temperature) is August (81.1°F).
The month with the lowest average high temperature is December (45.7°F).

The month with the highest average low temperature is August (51.1°F).
The coldest month (with the lowest average low temperature) is December (34.2°F).

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Average pressure
Harrisburg, OR

Average pressure - Harrisburg, OR

The month with the highest atmospheric pressure is January (30.11"Hg).
The months with the lowest atmospheric pressure are August and September (30.01"Hg).

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Average wind speed
Harrisburg, OR

Average wind speed - Harrisburg, OR

The windiest month (with the highest average wind speed) is March (4.8mph).
The calmest month (with the lowest average wind speed) is September (3.8mph).

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Average humidity
Harrisburg, OR

Average humidity - Harrisburg, OR

The months with the highest relative humidity are January, February, March and December (87%).
The month with the lowest relative humidity is August (68%).

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Average rainfall
Harrisburg, OR

Average rainfall - Harrisburg, OR

The wettest month (with the highest rainfall) is December (4.37").
The driest month (with the least rainfall) is July (0.2").

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Average rainfall days
Harrisburg, OR

Average rainfall days - Harrisburg, OR

The month with the highest number of rainy days is March (20 days).
The month with the least rainy days is August (3.6 days).

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Average snowfall
Harrisburg, OR

Average snowfall - Harrisburg, OR

The month with the highest snowfall is February (1.81").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days
Harrisburg, OR

Average snowfall days - Harrisburg, OR

The month with the highest number of snowfall days is February (2 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight / Average sunshine
Harrisburg, OR

Average daylight / Average sunshine - Harrisburg, OR

The month with the longest days is June (Average daylight: 15h and 28min).
The month with the shortest days is December (Average daylight: 8h and 55min).

The month with the most sunshine is August (Average sunshine: 11h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 0min).

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Average sunshine days
Harrisburg, OR

Average sunshine days - Harrisburg, OR

The month with the most sunshine days is July (26.2 days).
The months with the least sunshine days are February and March (9.4 days).

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Average UV index
Harrisburg, OR

Average UV index - Harrisburg, OR

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average visibility
Harrisburg, OR

Average visibility - Harrisburg, OR

The months with the highest visibility are May, June, July, August, September, October and November (5mi).
The months with the lowest visibility are January, February, March, April and December (4mi).

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