Climate and monthly weather forecastLa Grande, OR
Climate and monthly weather forecast
Weather in January
January, like December, in La Grande, Oregon, is a wintry winter month, with temperature in the range of an average low of 22.5°F (-5.3°C) and an average high of 34.3°F (1.3°C). With the advent of January, La Grande's high-temperatures adjust to a still wintry 34.3°F (1.3°C), closely aligning with the preceding month. Weather in January »Weather in February
The last month of the winter, February, is also a wintry month in La Grande, Oregon, with an average temperature ranging between max 36.1°F (2.3°C) and min 24.4°F (-4.2°C). February denotes a minimal variation in the average high-temperature to a still icy 36.1°F (2.3°C) from January's 34.3°F (1.3°C). Weather in February »Weather in March
The first month of the spring, March, is a chilly month in La Grande, Oregon, with an average temperature fluctuating between 28.6°F (-1.9°C) and 43.3°F (6.3°C). La Grande's March weather indicates a minor increase in high-temperatures, edging from February's cold 36.1°F (2.3°C) to a frosty 43.3°F (6.3°C). Weather in March »Weather in April
April in La Grande, Oregon, is a fresh spring month, with an average temperature fluctuating between 32.2°F (0.1°C) and 51.1°F (10.6°C). April witnesses a minor rise in the average high-temperature, transitioning from a chilly 43.3°F (6.3°C) in March to a fresh 51.1°F (10.6°C). Weather in April »Weather in May
May, the last month of the spring in La Grande, is an enjoyable month, with an average temperature varying between 37.6°F (3.1°C) and 61.3°F (16.3°C). The start of May is characterized by an increase in the average high-temperature, transitioning from a cool 51.1°F (10.6°C) in April to a comfortable 61.3°F (16.3°C). Weather in May »Weather in June
The first month of the summer, June, is a pleasant month in La Grande, Oregon, with an average temperature varying between 42.6°F (5.9°C) and 69.1°F (20.6°C). In La Grande, the average high-temperature in June slightly increases from an enjoyable 61.3°F (16.3°C) in May to an agreeable 69.1°F (20.6°C). Weather in June »Weather in July
July is a warm summer month in La Grande, Oregon, with an average temperature ranging between min 50.2°F (10.1°C) and max 81°F (27.2°C). The arrival of July sees a shift in the average high-temperature, moving from an agreeable 69.1°F (20.6°C) in June to a moderately hot 81°F (27.2°C). Weather in July »Weather in August
The last month of the summer, August, is also a moderately hot month in La Grande, Oregon, with an average temperature varying between 81.3°F (27.4°C) and 52.2°F (11.2°C). In La Grande, temperatures reach their average annual highs in August, measuring 81.3°F (27.4°C) and a minimum average of 52.2°F (11.2°C). The average heat index in August is calculated to be 80.6°F (27°C). Weather in August »Weather in September
The first month of the autumn, September, is still a pleasant month in La Grande, Oregon, with an average temperature fluctuating between 72.1°F (22.3°C) and 46°F (7.8°C). The move into September indicates a reduction in the average high-temperature, down from August's moderately hot 81.3°F (27.4°C) to a pleasant 72.1°F (22.3°C). Weather in September »Weather in October
October, the same as September, in La Grande, Oregon, is another mild autumn month, with an average temperature ranging between max 56.3°F (13.5°C) and min 37.2°F (2.9°C). The start of October signals a clear decrease in the average high-temperature, falling from a pleasant 72.1°F (22.3°C) in September to a moderate 56.3°F (13.5°C). Weather in October »Weather in November
The last month of the autumn, November, is also an icy month in La Grande, Oregon, with an average temperature ranging between max 42.1°F (5.6°C) and min 28.9°F (-1.7°C). Transition from October to November is accompanied by a temperature drop, with average high-temperatures decreasing from a moderate 56.3°F (13.5°C) to an icy 42.1°F (5.6°C). Weather in November »Weather in December
The first month of the winter, December, is also a wintry month in La Grande, Oregon, with an average temperature fluctuating between 20.5°F (-6.4°C) and 32.5°F (0.3°C). The coldest period tends to be December, when average temperatures fluctuate between a high of 32.5°F (0.3°C) and a low of 20.5°F (-6.4°C). 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
The months with the highest humidity are January and February, with an average relative humidity of 86%.
In La Grande, during the entire year, the rain falls for 141.7 days and collects up to 18.43" (468mm) of precipitation.
January through May, September through December are months with snowfall.
In La Grande, during the entire year, snow falls for 56.6 days and aggregates up to 36.85" (936mm) of snow.
The months with the least sunshine in La Grande are January and February, with an average of 5.1h of sunshine.
The months with the lowest UV index are January through April, November and December, with an average maximum UV index of 2.
The month with the most snowfall is February, when snow falls for 11.8 days and typically aggregates up to 10.2" (259mm) of snow.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, 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.
In La Grande, snow does not fall in June through August.
June has the longest days of the year, with an average of 15h and 36min of daylight.
July is the month with the least rainfall. Rain falls for 5.8 days and accumulates 0.35" (9mm) of precipitation.
The months with the most sunshine are July and August, with an average of 12h of sunshine.
July is the month with the highest UV index, with an average maximum UV index of 6.
August, having an average high-temperature of 81.3°F (27.4°C) and an average low-temperature of 52.2°F (11.2°C), is the warmest month.
August is the least humid month, with an average relative humidity of 45%.
The coldest time of the year is December, with temperatures averaging a high of 32.5°F (0.3°C) and a low of 20.5°F (-6.4°C).
December is the month with the most rainfall. Rain falls for 12.5 days and accumulates 2.48" (63mm) of precipitation.
December has the shortest days of the year, with an average of 8h and 48min of daylight.
Average temperature
La Grande, OR
The warmest month (with the highest average high temperature) is August (81.3°F).
The month with the lowest average high temperature is December (32.5°F).
The month with the highest average low temperature is August (52.2°F).
The coldest month (with the lowest average low temperature) is December (20.5°F).
Average pressure
La Grande, OR
- Average pressure in January:
30.22"Hg - Average pressure in February:
30.11"Hg - Average pressure in March:
30.03"Hg - Average pressure in April:
30.01"Hg - Average pressure in May:
29.95"Hg - Average pressure in June:
29.93"Hg
- Average pressure in July:
29.93"Hg - Average pressure in August:
29.92"Hg - Average pressure in September:
29.96"Hg - Average pressure in October:
30.05"Hg - Average pressure in November:
30.11"Hg - Average pressure in December:
30.19"Hg
The month with the highest atmospheric pressure is January (30.22"Hg).
The month with the lowest atmospheric pressure is August (29.92"Hg).
Average wind speed
La Grande, OR
- Average wind speed in January:
7.1mph - Average wind speed in February:
6.2mph - Average wind speed in March:
6.1mph - Average wind speed in April:
5.8mph - Average wind speed in May:
4.9mph - Average wind speed in June:
4.8mph
- Average wind speed in July:
4.5mph - Average wind speed in August:
4.4mph - Average wind speed in September:
4.6mph - Average wind speed in October:
5.5mph - Average wind speed in November:
6.7mph - Average wind speed in December:
7mph
The windiest month (with the highest average wind speed) is January (7.1mph).
The calmest month (with the lowest average wind speed) is August (4.4mph).
Average humidity
La Grande, OR
The months with the highest relative humidity are January and February (86%).
The month with the lowest relative humidity is August (45%).
Average rainfall
La Grande, OR
- Average rainfall in January:
2.32" - Average rainfall in February:
2.4" - Average rainfall in March:
2.09" - Average rainfall in April:
1.77" - Average rainfall in May:
1.57" - Average rainfall in June:
1.34"
The wettest month (with the highest rainfall) is December (2.48").
The driest month (with the least rainfall) is July (0.35").
Average rainfall days
La Grande, OR
- Average rainfall days in January:
11.8 days - Average rainfall days in February:
12.8 days - Average rainfall days in March:
17.3 days - Average rainfall days in April:
17.1 days - Average rainfall days in May:
15.8 days - Average rainfall days in June:
11.5 days
- Average rainfall days in July:
5.8 days - Average rainfall days in August:
4.8 days - Average rainfall days in September:
6.5 days - Average rainfall days in October:
12.1 days - Average rainfall days in November:
13.7 days - Average rainfall days in December:
12.5 days
The month with the highest number of rainy days is March (17.3 days).
The month with the least rainy days is August (4.8 days).
Average snowfall
La Grande, OR
- Average snowfall in January:
8.07" - Average snowfall in February:
10.2" - Average snowfall in March:
4.25" - Average snowfall in April:
1.65" - Average snowfall in May:
0.31" - Average snowfall in June:
0"
The month with the highest snowfall is February (10.2").
The months with the least snowfall are June, July and August (0").
Average snowfall days
La Grande, OR
- Average snowfall days in January:
11.9 days - Average snowfall days in February:
11.8 days - Average snowfall days in March:
8.5 days - Average snowfall days in April:
4 days - Average snowfall days in May:
0.8 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:
0.2 days - Average snowfall days in October:
1 days - Average snowfall days in November:
5.2 days - Average snowfall days in December:
13.2 days
The month with the highest number of snowfall days is December (13.2 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight / Average sunshine
La Grande, OR
- Average daylight in January:
9h and 12min - Average daylight in February:
10h and 24min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 36min - Average daylight in May:
14h and 54min - Average daylight in June:
15h and 36min
- Average daylight in July:
15h and 12min - Average daylight in August:
14h and 0min - Average daylight in September:
12h and 30min - Average daylight in October:
10h and 54min - Average daylight in November:
9h and 30min - Average daylight in December:
8h and 48min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in January:
5h and 6min - Average sunshine in February:
5h and 6min - Average sunshine in March:
7h and 18min - Average sunshine in April:
10h and 12min - Average sunshine in May:
11h and 0min - Average sunshine in June:
11h and 18min
- Average sunshine in July:
12h and 0min - Average sunshine in August:
12h and 0min - Average sunshine in September:
10h and 36min - Average sunshine in October:
7h and 24min - Average sunshine in November:
6h and 12min - Average sunshine in December:
5h and 18min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The months with the least sunshine are January and February (Average sunshine: 5h and 6min).
Average sunshine days
La Grande, OR
- Average sunshine days in January:
12.7 days - Average sunshine days in February:
9.1 days - Average sunshine days in March:
9.7 days - Average sunshine days in April:
10.1 days - Average sunshine days in May:
12.8 days - Average sunshine days in June:
16.1 days
- Average sunshine days in July:
23.4 days - Average sunshine days in August:
23.3 days - Average sunshine days in September:
21.6 days - Average sunshine days in October:
17.2 days - Average sunshine days in November:
12.5 days - Average sunshine days in December:
11.9 days
The month with the most sunshine days is July (23.4 days).
The month with the least sunshine days is February (9.1 days).
Average UV index
La Grande, OR
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, April, November and December (UV index 2).
Average cloud cover
La Grande, OR
The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 10).
Average visibility
La Grande, OR
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (5mi).
