Climate and monthly weather forecast
Sisters, OR

Weather in January

January, the same as December, is another cold winter month in Sisters, Oregon, with an average temperature varying between 39°F (3.9°C) and 26.6°F (-3°C). In Sisters, the average high-temperature in January is essentially the same as in December - a still wintry 39°F (3.9°C). Weather in January »

Weather in February

The last month of the winter, February, is another cold month in Sisters, Oregon, with an average temperature varying between 38.8°F (3.8°C) and 27.1°F (-2.7°C). In February, the average high-temperature is relatively the same as in January - a still wintry 38.8°F (3.8°C). Weather in February »

Weather in March

March, the first month of the spring in Sisters, is a frosty month, with an average temperature varying between 29.3°F (-1.5°C) and 42.8°F (6°C). In March, the average high-temperature is practically the same as in February - a frosty 42.8°F (6°C). Weather in March »

Weather in April

April, the same as March, in Sisters, Oregon, is another chilly spring month, with an average temperature varying between 33.3°F (0.7°C) and 49.8°F (9.9°C). In April, the average high-temperature marginally rises from a frosty 42.8°F (6°C) in March to a still chilly 49.8°F (9.9°C). Weather in April »

Weather in May

May, the last month of the spring in Sisters, is a mild month, with an average temperature fluctuating between 60.1°F (15.6°C) and 39.2°F (4°C). In Sisters, the average high-temperature in May rises from a frosty 49.8°F (9.9°C) in April to a mild 60.1°F (15.6°C). Weather in May »

Weather in June

The first month of the summer, June, is an enjoyable month in Sisters, Oregon, with temperature in the range of an average high of 67.5°F (19.7°C) and an average low of 44.6°F (7°C). In Sisters, the average high-temperature in June slightly increases from a moderate 60.1°F (15.6°C) in May to a comfortable 67.5°F (19.7°C). Weather in June »

Weather in July

July in Sisters, Oregon, is a moderately hot summer month, with temperature in the range of an average high of 78.8°F (26°C) and an average low of 49.6°F (9.8°C). July is the warmest month, with an average high-temperature of 78.8°F (26°C) and an average low-temperature of 49.6°F (9.8°C). Weather in July »

Weather in August

The last month of the summer, August, is another warm month in Sisters, Oregon, with an average temperature fluctuating between 50.7°F (10.4°C) and 78.4°F (25.8°C). In August, the average high-temperature is almost the same as in July - a still warm 78.4°F (25.8°C). Weather in August »

Weather in September

September, the first month of the autumn in Sisters, is still a pleasant month, with an average temperature ranging between max 69.8°F (21°C) and min 45.1°F (7.3°C). In September, the average high-temperature slightly decreases from a moderately hot 78.4°F (25.8°C) in August to a pleasant 69.8°F (21°C). Weather in September »

Weather in October

October, the same as September, in Sisters, Oregon, is another mild autumn month, with an average temperature varying between 38.5°F (3.6°C) and 55.8°F (13.2°C). In October, the average high-temperature drops from a pleasant 69.8°F (21°C) in September to a mild 55.8°F (13.2°C). Weather in October »

Weather in November

The last month of the autumn, November, is another chilly month in Sisters, Oregon, with an average temperature varying between 44.2°F (6.8°C) and 31.1°F (-0.5°C). In November, the average high-temperature drops from a moderate 55.8°F (13.2°C) in October to a frosty 44.2°F (6.8°C). Weather in November »

Weather in December

December, the first month of the winter in Sisters, is still a cold month, with an average temperature ranging between min 24.8°F (-4°C) and max 36.5°F (2.5°C). December is the coldest month, with an average high-temperature of 36.5°F (2.5°C) and an average low-temperature of 24.8°F (-4°C). Weather in December »
[Resources]

FAQ

What is the rainiest month in Sisters?

January is the month with the most rainfall in Sisters, Oregon. Rain falls for 12.8 days and accumulates 3.31" (84mm) of precipitation.

How much does it rain in Sisters?

Throughout the year, there are 142.1 rainfall days, and 22.87" (581mm) of precipitation is accumulated.

When does it snow in Sisters?

Months with snowfall in Sisters, Oregon, are January through May, September through December.

How many days does it snow in Sisters?

Throughout the year, there are 70.7 snowfall days, and 60.04" (1525mm) of snow is accumulated.

When does it snow the most in Sisters?

The month with the most snowfall in Sisters, Oregon, is February, when snow falls for 12.6 days and typically aggregates up to 13.74" (349mm) of snow.

When is the lowest UV index in Sisters?

With an average maximum UV index of 1, February is the month with the lowest UV index in Sisters.

When is Daylight Saving Time (DST) in Sisters?

On Sunday, March 13. 2022, at 2:00 am, Daylight Saving Time starts in Sisters, and the time zone changes from PST to PDT. Daylight Saving Time ends Sunday, November 6. 2022, at 2:00 am, and the time zone reverts from PDT to PST.

When it does not snow in Sisters?

June through August are months without snowfall.

When are the longest days in Sisters?

With an average of 15h and 28min of daylight, June has the longest days of the year in Sisters, Oregon.

What is the warmest month in Sisters?

July is the warmest month in Sisters, with an average high-temperature of 78.8°F (26°C) and an average low-temperature of 49.6°F (9.8°C).

What is the least humid month in Sisters?

July and August, with an average relative humidity of 53%, are the least humid months.

What is the driest month in Sisters?

The month with the least rainfall is July, when the rain falls for 5 days and typically collects 0.35" (9mm) of precipitation.

What month has the most sunshine in Sisters?

The month with the most sunshine in Sisters, Oregon, is July, with an average of 12h of sunshine.

What is the month with the highest UV index in Sisters?

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

What is the coldest month in Sisters?

The coldest month in Sisters is December, with an average high-temperature of 36.5°F (2.5°C) and an average low-temperature of 24.8°F (-4°C).

What is the most humid month in Sisters?

December is the most humid month in Sisters, Oregon, with an average relative humidity of 84%.

What is the month with the shortest days in Sisters?

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

What is the month with the least sunshine in Sisters?

The month with the least sunshine in Sisters, Oregon, is December, with an average of 5.1h of sunshine.

Average temperature
Sisters, OR

Average temperature - Sisters, OR

The warmest month (with the highest average high temperature) is July (78.8°F).
The month with the lowest average high temperature is December (36.5°F).

The month with the highest average low temperature is August (50.7°F).
The coldest month (with the lowest average low temperature) is December (24.8°F).

[Resources]

Average pressure
Sisters, OR

Average pressure - Sisters, OR

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is August (29.98"Hg).

[Resources]

Average wind speed
Sisters, OR

Average wind speed - Sisters, OR

The windiest month (with the highest average wind speed) is February (6.1mph).
The calmest months (with the lowest average wind speed) are August and September (4.8mph).

[Resources]

Average humidity
Sisters, OR

Average humidity - Sisters, OR

The month with the highest relative humidity is December (84%).
The months with the lowest relative humidity are July and August (53%).

[Resources]

Average rainfall
Sisters, OR

Average rainfall - Sisters, OR

The wettest month (with the highest rainfall) is January (3.31").
The driest month (with the least rainfall) is July (0.35").

[Resources]

Average rainfall days
Sisters, OR

Average rainfall days - Sisters, OR

The month with the highest number of rainy days is March (16.9 days).
The month with the least rainy days is July (5 days).

[Resources]

Average snowfall
Sisters, OR

Average snowfall - Sisters, OR

The month with the highest snowfall is February (13.74").
The months with the least snowfall are June, July and August (0").

[Resources]

Average snowfall days
Sisters, OR

Average snowfall days - Sisters, OR

The month with the highest number of snowfall days is December (14.7 days).
The months with the least snowfall days are June, July and August (0 days).

[Resources]

Average daylight / Average sunshine
Sisters, OR

Average daylight / Average sunshine - Sisters, 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 July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).

[Resources]

Average sunshine days
Sisters, OR

Average sunshine days - Sisters, OR

The month with the most sunshine days is July (23.3 days).
The month with the least sunshine days is March (8.1 days).

[Resources]

Average visibility
Sisters, OR

Average visibility - Sisters, OR

The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March and December (5mi).

[Resources]

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location
* you will be automatically redirected to the weather forecast for your location