Sisters
Oregon, USA
Long-term weather forecast
Long-term weather forecast

May weather forecast and climate
Sisters, OR

May, the last month of the spring, in Sisters, is an enjoyable month, with average temperature ranging between max 65.5°F (18.6°C) and min 33.8°F (1°C).

Temperature

In May, the average high-temperature marginally rises, from a mild 57°F (13.9°C) in April, to an enjoyable 65.5°F (18.6°C). In Sisters, in May, the average low-temperature is 33.8°F (1°C).

Rainfall

In Sisters, in May, it is raining for 6 days, with typically 0.8" (19.8mm) of accumulated precipitation. Throughout the year, in Sisters, Oregon, there are 72 rainfall days, and 13.5" (342.9mm) of precipitation is accumulated.

Snowfall

In Sisters snow does not fall through September.

Daylight

In May, the average length of the day is 14.8h.

What is the temperature in May in Sisters?

In Sisters, in May, the average high-temperature is 65.5°F (18.6°C), and the average low-temperature is 33.8°F (1°C).

How many days does it rain in May in Sisters?

In Sisters, Oregon, in May, during 6 rainfall days, 0.8" (19.8mm) of precipitation is typically accumulated.

Does it snow in Sisters in May?

In May, in Sisters, Oregon, it doesn't snow. April is the latest month when it typically snows.

When it does not snow in Sisters?

May through September are months without snowfall in Sisters.

How many hours of daylight does Sisters have in May?

The average length of the day in May is 14.8h.
Average temperature in May - Sisters, OR
  • Average high temperature in May: 65.5°F

The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is December (40.5°F).

  • Average low temperature in May: 33.8°F

The month with the highest average low temperature is July (42.4°F).
The coldest month (with the lowest average low temperature) is December (20.9°F).

Average rainfall in May - Sisters, OR
  • Average rainfall in May: 0.8"

The wettest month (with the highest rainfall) is December (2.3").
Driest months (with the lowest rainfall) are July, August and September (0.4").

Average rainfall days in May - Sisters, OR
  • Average rainfall days in May: 6 days

The month with the highest number of rainy days is November (10 days).
The month with the lowest number of rainy days is July (2 days).

Average snowfall in May - Sisters, OR
  • Average snowfall in May: 0"

The month with the highest snowfall is January (8.3").
Months with the lowest snowfall are May, June, July, August and September (0").

Average daylight in May - Sisters, OR
  • Average daylight in May: 14.8h

The month with the longest days is June (Average daylight: 15.5h).
The month with shortest days is December (Average daylight: 8.9h).