Expand
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
Weather in January
January, the same as December, is another fresh winter month in O'Brien, Oregon, with an average temperature ranging between min 41.4°F (5.2°C) and max 51.6°F (10.9°C). January's climate shows a minor adjustment in average high-temperatures to a still cool 51.6°F (10.9°C) from December's 50.4°F (10.2°C). Weather in January »
Weather in February
The last month of the winter, February, is also a fresh month in O'Brien, Oregon, with an average temperature varying between 40.5°F (4.7°C) and 50.9°F (10.5°C). The average high-temperature is a still cool 50.9°F (10.5°C) in February, hardly different from the 51.6°F (10.9°C) recorded in January. Weather in February »
Weather in March
The first month of the spring, March, is also a fresh month in O'Brien, Oregon, with temperature in the range of an average high of 51.4°F (10.8°C) and an average low of 40.6°F (4.8°C). Transitioning into March, O'Brien records an average high-temperature of a still cool 51.4°F (10.8°C), almost identical to February's 50.9°F (10.5°C). Weather in March »
Weather in April
April, the same as March, is a cool spring month in O'Brien, Oregon, with an average temperature fluctuating between 42.3°F (5.7°C) and 55°F (12.8°C). The transition from March to April sees average high-temperatures adjusting to a still fresh 55°F (12.8°C), from a not significantly different 51.4°F (10.8°C). Weather in April »
Weather in May
The last month of the spring, May, is a refreshing month in O'Brien, Oregon, with an average temperature varying between 45.5°F (7.5°C) and 60.8°F (16°C). With the onset of May, O'Brien experiences a subtle temperature shift, with the average high-temperature moving from a fresh 55°F (12.8°C) in April to a refreshing 60.8°F (16°C). Weather in May »
Weather in June
June, the first month of the summer in O'Brien, is still a comfortable month, with temperature in the range of an average high of 66°F (18.9°C) and an average low of 49.6°F (9.8°C). The onset of June brings with it an average high-temperature of a still comfortable 66°F (18.9°C), showing a negligible variation from the month before. Weather in June »
Weather in July
July is an agreeable summer month in O'Brien, Oregon, with an average temperature fluctuating between 53.6°F (12°C) and 71.8°F (22.1°C). In O'Brien, July records the highest average temperatures, peaking at 71.8°F (22.1°C) and reaching a low of 53.6°F (12°C). Weather in July »
Weather in August
August, the last month of the summer in O'Brien, is also an agreeable month, with an average temperature fluctuating between 71.4°F (21.9°C) and 53.2°F (11.8°C). O'Brien observes an average high-temperature of a still pleasant 71.4°F (21.9°C) in August, barely different from 71.8°F (22.1°C) in July. Weather in August »
Weather in September
September, the first month of the autumn in O'Brien, is still a pleasant month, with an average temperature varying between 51.4°F (10.8°C) and 68.7°F (20.4°C). Stepping into September, O'Brien records an average high-temperature of a still pleasant 68.7°F (20.4°C), almost consistent with August. Weather in September »
Weather in October
October, the same as September, is another refreshing autumn month in O'Brien, Oregon, with temperature in the range of an average high of 62.6°F (17°C) and an average low of 48.2°F (9°C). Transitioning from September to October involves a subtle drop in average high-temperatures, descending from a pleasant 68.7°F (20.4°C) to an enjoyable 62.6°F (17°C). Weather in October »
Weather in November
November, the last month of the autumn in O'Brien, is also a fresh month, with an average temperature fluctuating between 54.7°F (12.6°C) and 43.7°F (6.5°C). A subtle shift in O'Brien's weather is observed as October turns into November, with the average high temperature reducing from a refreshing 62.6°F (17°C) to a cool 54.7°F (12.6°C). Weather in November »
Weather in December
The first month of the winter, December, is also a fresh month in O'Brien, Oregon, with temperature in the range of an average low of 40.6°F (4.8°C) and an average high of 50.4°F (10.2°C). O'Brien's December weather, with an average high temperature of 50.4°F (10.2°C) and an average low temperature of 40.6°F (4.8°C), tends to be the coldest of the year. Weather in December »
[Resources]Frequently asked questions
What is the wettest month in O'Brien?
January is the month with the most rainfall. Rain falls for 16.3 days and accumulates 8.11" (206mm) of precipitation.
How many days does it rain in O'Brien?
Throughout the year, in O'Brien, there are 131.8 rainfall days, and 46.14" (1172mm) of precipitation is accumulated.
When it does not snow in O'Brien?
January, March through December are months without snowfall.
How much does it snow in O'Brien?
Throughout the year, in O'Brien, 0.59" (15mm) of snow is accumulated.
When does it snow in O'Brien?
February is the only month when snow falls in O'Brien, Oregon.
What is the snowiest month in O'Brien?
The month with the most snowfall is February, when snow falls for 0.3 days and typically aggregates up to 0.59" (15mm) of snow.
When is the lowest UV index in O'Brien?
The months with the lowest UV index in O'Brien are February and December, with an average maximum UV index of 2.
What is the most humid month in O'Brien?
With an average relative humidity of 83%, March is the most humid month in O'Brien, Oregon.
When is Daylight Saving Time (DST) in O'Brien?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in O'Brien, 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 are the longest days in O'Brien?
With an average of 15h and 12min of daylight, June has the longest days of the year in O'Brien.
What are the months with the highest UV index in O'Brien?
The months with the highest UV index in O'Brien, Oregon, are June through August, with an average maximum UV index of 5.
What month is the hottest in O'Brien?
In O'Brien, Oregon, temperatures reach their average annual highs in July, measuring 71.8°F (22.1°C) and a minimum average of 53.6°F (12°C).
What is the driest month in O'Brien?
July is the month with the least rainfall. Rain falls for 2.3 days and accumulates 0.12" (3mm) of precipitation.
What month has the most sunshine in O'Brien?
With an average of 11.9h of sunshine, July has the most sunshine of the year in O'Brien, Oregon.
What is the least humid month in O'Brien?
With an average relative humidity of 72%, September is the least humid month in O'Brien.
What is the coldest month in O'Brien?
December stands out as O'Brien's coldest month, with temperatures ranging between an average high of 50.4°F (10.2°C) and a low of 40.6°F (4.8°C).
What is the month with the shortest days in O'Brien?
With an average of 9h and 12min of daylight, December has the shortest days of the year.
What is the month with the least sunshine in O'Brien?
December has the least sunshine of the year, with an average of 4.7h of sunshine.
Average temperature
O'Brien, OR
The warmest month (with the highest average high temperature) is July (71.8°F).
The month with the lowest average high temperature is December (50.4°F).
The month with the highest average low temperature is July (53.6°F).
The coldest month (with the lowest average low temperature) is February (40.5°F).
Average pressure
O'Brien, OR
- Average pressure in January:
30.12"Hg - Average pressure in February:
30.09"Hg - Average pressure in March:
30.06"Hg - Average pressure in April:
30.09"Hg - Average pressure in May:
30.04"Hg - Average pressure in June:
30.03"Hg
- Average pressure in July:
30.01"Hg - Average pressure in August:
29.99"Hg - Average pressure in September:
30"Hg - Average pressure in October:
30.05"Hg - Average pressure in November:
30.08"Hg - Average pressure in December:
30.11"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is August (29.99"Hg).
Average wind speed
O'Brien, OR
- Average wind speed in January:
7.5mph - Average wind speed in February:
7.8mph - Average wind speed in March:
8.2mph - Average wind speed in April:
7.6mph - Average wind speed in May:
7.1mph - Average wind speed in June:
7.7mph
- Average wind speed in July:
6.6mph - Average wind speed in August:
5.6mph - Average wind speed in September:
6mph - Average wind speed in October:
6.7mph - Average wind speed in November:
7.1mph - Average wind speed in December:
7.8mph
The windiest month (with the highest average wind speed) is March (8.2mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).
Average humidity
O'Brien, OR
The month with the highest relative humidity is March (83%).
The month with the lowest relative humidity is September (72%).
Average rainfall
O'Brien, OR
- Average rainfall in January:
8.11" - Average rainfall in February:
6.69" - Average rainfall in March:
7.09" - Average rainfall in April:
4.02" - Average rainfall in May:
2.56" - Average rainfall in June:
0.91"
- Average rainfall in July:
0.12" - Average rainfall in August:
0.24" - Average rainfall in September:
1.18" - Average rainfall in October:
3.23" - Average rainfall in November:
4.57" - Average rainfall in December:
7.44"
The wettest month (with the highest rainfall) is January (8.11").
The driest month (with the least rainfall) is July (0.12").
Average rainfall days
O'Brien, OR
- Average rainfall days in January:
16.3 days - Average rainfall days in February:
14.8 days - Average rainfall days in March:
19.2 days - Average rainfall days in April:
14.5 days - Average rainfall days in May:
9.8 days - Average rainfall days in June:
5.9 days
- Average rainfall days in July:
2.3 days - Average rainfall days in August:
2.8 days - Average rainfall days in September:
5.7 days - Average rainfall days in October:
9.9 days - Average rainfall days in November:
13.6 days - Average rainfall days in December:
17 days
The month with the highest number of rainy days is March (19.2 days).
The month with the least rainy days is July (2.3 days).
Average snowfall
O'Brien, OR
The month with the highest snowfall is February (0.59").
The months with the least snowfall are January, March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days
O'Brien, OR
- Average snowfall days in January:
0 days - Average snowfall days in February:
0.3 days - Average snowfall days in March:
0 days - Average snowfall days in April:
0 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 days - Average snowfall days in December:
0.1 days
The month with the highest number of snowfall days is February (0.3 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October and November (0 days).
Average daylight / Average sunshine
O'Brien, OR
- Average daylight in January:
9h and 3min - Average daylight in February:
10h and 4min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 2min - Average daylight in May:
14h and 4min - Average daylight in June:
15h and 1min
- Average daylight in July:
14h and 5min - Average daylight in August:
13h and 5min - Average daylight in September:
12h and 3min - Average daylight in October:
11h and 1min - Average daylight in November:
9h and 5min - Average daylight in December:
9h and 1min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in January:
4h and 5min - Average sunshine in February:
5h and 0min - Average sunshine in March:
6h and 1min - Average sunshine in April:
8h and 4min - Average sunshine in May:
10h and 0min - Average sunshine in June:
10h and 5min
- Average sunshine in July:
11h and 5min - Average sunshine in August:
11h and 4min - Average sunshine in September:
10h and 0min - Average sunshine in October:
6h and 3min - Average sunshine in November:
5h and 3min - Average sunshine in December:
4h and 4min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 4h and 42min).
Average sunshine days
O'Brien, OR
- Average sunshine days in January:
13.6 days - Average sunshine days in February:
11.9 days - Average sunshine days in March:
10.5 days - Average sunshine days in April:
13.3 days - Average sunshine days in May:
19.8 days - Average sunshine days in June:
22.2 days
- Average sunshine days in July:
27.7 days - Average sunshine days in August:
26.3 days - Average sunshine days in September:
23.4 days - Average sunshine days in October:
20.2 days - Average sunshine days in November:
14.6 days - Average sunshine days in December:
13 days
The month with the most sunshine days is July (27.7 days).
The month with the least sunshine days is March (10.5 days).
Average UV index
O'Brien, OR
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are February and December (UV index 2).
Average cloud cover
O'Brien, OR
The month with the most cloud cover is March (Cloud cover 51).
The month with the least cloud cover is July (Cloud cover 10).
Average visibility
O'Brien, OR
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
O'Brien, Oregon, USA
Weather forecast for your location
1. Click Locate me button
2. Allow the app to use your location
2. Allow the app to use your location
