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Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Climate and monthly weather forecast
Weather in January
January, the same as December, in Harrisburg, Oregon, is another chilly winter month, with an average temperature ranging between min 35.2°F (1.8°C) and max 48.6°F (9.2°C). The onset of January notes an average high-temperature of a still chilly 48.6°F (9.2°C), subtly shifted from December's 45.7°F (7.6°C). Weather in January »
Weather in February
February, the last month of the winter in Harrisburg, is another chilly month, with an average temperature fluctuating between 49.1°F (9.5°C) and 35.1°F (1.7°C). The advent of February presents an average high-temperature of a still chilly 49.1°F (9.5°C), maintaining a close correlation with the preceding month. Weather in February »
Weather in March
March, the first month of the spring in Harrisburg, is a fresh month, with temperature in the range of an average high of 52.7°F (11.5°C) and an average low of 36.7°F (2.6°C). The advent of March sees the average high-temperature at a fresh 52.7°F (11.5°C), subtly shifted from February's 49.1°F (9.5°C). Weather in March »
Weather in April
April in Harrisburg, Oregon, is a mild spring month, with an average temperature fluctuating between 37.6°F (3.1°C) and 57.7°F (14.3°C). April's average high-temperature is a refreshing 57.7°F (14.3°C), maintaining a close comparison with March's 52.7°F (11.5°C). Weather in April »
Weather in May
May, the last month of the spring in Harrisburg, is an enjoyable month, with an average temperature ranging between max 65.5°F (18.6°C) and min 41.2°F (5.1°C). The average high-temperature mildly increases in May, edging from a mild 57.7°F (14.3°C) in April to a still refreshing 65.5°F (18.6°C). Weather in May »
Weather in June
The first month of the summer, June, is an agreeable month in Harrisburg, Oregon, with an average temperature ranging between max 71.2°F (21.8°C) and min 45.1°F (7.3°C). June's arrival coincides with a subtle temperature rise, moving from May's refreshing 65.5°F (18.6°C) to an agreeable 71.2°F (21.8°C). Weather in June »
Weather in July
July in Harrisburg, Oregon, is a warm summer month, with temperature in the range of an average high of 79.3°F (26.3°C) and an average low of 49.8°F (9.9°C). Harrisburg's transition into July sees a mild rise in the average high-temperature, edging 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 an average temperature varying between 81.1°F (27.3°C) and 51.1°F (10.6°C). During the warmest month, August, temperatures average a high of 81.1°F (27.3°C) and a low of 51.1°F (10.6°C). During August, the heat index is evaluated at 84.2°F (29°C). Weather in August »
Weather in September
The first month of the autumn, September, is still a warm month in Harrisburg, Oregon, with an average temperature ranging between min 48.6°F (9.2°C) and max 73.6°F (23.1°C). The commencement of September includes a gentle temperature shift, with the average high-temperature dropping a bit from a warm 81.1°F (27.3°C) in August to a still moderately hot 73.6°F (23.1°C). Weather in September »
Weather in October
October, the same as September, is another refreshing autumn month in Harrisburg, Oregon, with an average temperature varying between 43.7°F (6.5°C) and 62.2°F (16.8°C). October implies a gentle temperature shift, with average high-temperatures reducing from September's warm 73.6°F (23.1°C) to a refreshing 62.2°F (16.8°C). Weather in October »
Weather in November
November, the last month of the autumn in Harrisburg, is another cool month, with an average temperature fluctuating between 51.6°F (10.9°C) and 38.8°F (3.8°C). A shift in the average high-temperature occurs in November, reducing from a refreshing 62.2°F (16.8°C) in October to a fresh 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 ranging between max 45.7°F (7.6°C) and min 34.2°F (1.2°C). December, known for its average high temperature of 45.7°F (7.6°C) and an average low temperature of 34.2°F (1.2°C), is the coldest month. Weather in December »
Updated: Jun 4, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the most humid months?
January through March and December, with an average relative humidity of 87%, are most humid months.
How many days does it rain?
Throughout the year, there are 161.8 rainfall days, and 28.82" (732mm) of precipitation is accumulated.
When does it snow?
Months with snowfall are January through March, November and December.
How many days does it snow?
In Harrisburg, 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?
The months with the lowest UV index in Harrisburg are January, February, November and December, with an average maximum UV index of 2.
When does it snow the most?
February is the month with the most snowfall. Snow falls for 2 days and accumulates 1.81" (46mm) of snow.
What is the month with the least sunshine?
February has the least sunshine of the year, with an average of 4h of sunshine.
When is Daylight Saving Time (DST)?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Harrisburg, and the time zone changes from PST to PDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from PDT to PST.
When it does not snow?
April through October are months without snowfall.
When are the longest days?
With an average of 15h and 30min of daylight, June has the longest days of the year.
What is the driest month?
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?
The month with the highest UV index is July, with an average maximum UV index of 6.
What time of the year is the hottest?
Harrisburg's warmest month, August, generally records average temperatures ranging from a high of 81.1°F (27.3°C) to a low of 51.1°F (10.6°C).
What is the least humid month?
With an average relative humidity of 68%, August is the least humid month.
What month has the most sunshine?
August has the most sunshine of the year, with an average of 11.1h of sunshine.
What is the coldest month?
December proves to be the coldest month, recording an average maximum temperature of 45.7°F (7.6°C) and a minimum temperature of 34.2°F (1.2°C).
What is the wettest month?
The month with the most rainfall 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?
The month with the shortest days is December, with an average of 8h and 54min of daylight.
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).
Average pressure
Harrisburg, OR
- Average pressure in January:
30.11"Hg - Average pressure in February:
30.08"Hg - Average pressure in March:
30.04"Hg - Average pressure in April:
30.08"Hg - Average pressure in May:
30.04"Hg - Average pressure in June:
30.04"Hg
- Average pressure in July:
30.04"Hg - Average pressure in August:
30.01"Hg - Average pressure in September:
30.01"Hg - Average pressure in October:
30.05"Hg - Average pressure in November:
30.07"Hg - Average pressure in December:
30.1"Hg
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).
Average wind speed
Harrisburg, OR
- Average wind speed in January:
4.7mph - Average wind speed in February:
4.7mph - Average wind speed in March:
4.8mph - Average wind speed in April:
4.5mph - Average wind speed in May:
4.2mph - Average wind speed in June:
4.2mph
- Average wind speed in July:
4.1mph - Average wind speed in August:
3.9mph - Average wind speed in September:
3.8mph - Average wind speed in October:
4.3mph - Average wind speed in November:
4.7mph - Average wind speed in December:
4.7mph
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).
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%).
Average rainfall
Harrisburg, OR
- Average rainfall in January:
3.9" - Average rainfall in February:
3.31" - Average rainfall in March:
3.62" - Average rainfall in April:
2.95" - Average rainfall in May:
1.81" - Average rainfall in June:
1.14"
- Average rainfall in July:
0.2" - Average rainfall in August:
0.35" - Average rainfall in September:
1.26" - Average rainfall in October:
2.56" - Average rainfall in November:
3.35" - Average rainfall in December:
4.37"
The wettest month (with the highest rainfall) is December (4.37").
The driest month (with the least rainfall) is July (0.2").
Average rainfall days
Harrisburg, OR
- Average rainfall days in January:
17.3 days - Average rainfall days in February:
16.6 days - Average rainfall days in March:
20 days - Average rainfall days in April:
17.8 days - Average rainfall days in May:
13.1 days - Average rainfall days in June:
10.3 days
- Average rainfall days in July:
4.1 days - Average rainfall days in August:
3.6 days - Average rainfall days in September:
8.5 days - Average rainfall days in October:
14.9 days - Average rainfall days in November:
17.4 days - Average rainfall days in December:
18.2 days
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).
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").
Average snowfall days
Harrisburg, OR
- Average snowfall days in January:
0.8 days - Average snowfall days in February:
2 days - Average snowfall days in March:
0.8 days - Average snowfall days in April:
0.1 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0 days - Average snowfall days in November:
0.1 days - Average snowfall days in December:
0.3 days
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).
Average daylight / Average sunshine
Harrisburg, OR
- Average daylight in January:
9h and 2min - Average daylight in February:
10h and 3min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 3min - Average daylight in May:
14h and 5min - Average daylight in June:
15h and 3min
- Average daylight in July:
15h and 1min - Average daylight in August:
14h and 0min - Average daylight in September:
12h and 3min - Average daylight in October:
11h and 0min - Average daylight in November:
9h and 4min - Average daylight in December:
8h 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 January:
4h and 2min - Average sunshine in February:
4h and 0min - Average sunshine in March:
5h and 4min - Average sunshine in April:
7h and 0min - Average sunshine in May:
8h and 3min - Average sunshine in June:
9h and 2min
- Average sunshine in July:
11h and 0min - Average sunshine in August:
11h and 1min - Average sunshine in September:
9h and 2min - Average sunshine in October:
5h and 3min - Average sunshine in November:
4h and 5min - Average sunshine in December:
4h and 1min
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).
Average sunshine days
Harrisburg, OR
- Average sunshine days in January:
12.2 days - Average sunshine days in February:
9.4 days - Average sunshine days in March:
9.4 days - Average sunshine days in April:
10.3 days - Average sunshine days in May:
15.3 days - Average sunshine days in June:
17.5 days
- Average sunshine days in July:
26.2 days - Average sunshine days in August:
25.3 days - Average sunshine days in September:
20.5 days - Average sunshine days in October:
14.5 days - Average sunshine days in November:
11.1 days - Average sunshine days in December:
11.6 days
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).
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).
Average cloud cover
Harrisburg, OR
The month with the most cloud cover is February (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 22).
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).