Sisters
Oregon, USA
Long-term weather forecast
Long-term weather forecast
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May weather forecast and Climate
Sisters, OR

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  • The 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).

  • The 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).

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  • The 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").

  • The 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).

  • The 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").

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