Climate Insights for Post Falls

The climate in Post Falls is cool. The average annual temperature is 10°C and approximately 740mm of precipitation falls per year. December is the wettest month, receiving around 110mm of rainfall. Post Falls is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, August, June. The coldest months are February, January, December, when temperatures can drop to -4°C. Snowfall occurs from January to December, with around 192cm accumulating over the season.

Temperatures in Post Falls vary considerably across the year, with a 35°C difference between the coldest and warmest months. The warmest month is July, when average highs reach 31°C and the mean temperature sits around 23°C. The coldest month is February, when overnight lows fall to -4°C and the daily average is -1°C. On average, daily temperatures fluctuate by about 10°C between overnight lows and afternoon highs. The sharpest temperature change occurs between September and October, with a 8°C shift in average temperatures.

Post Falls is a relatively dry area, receiving approximately 740mm of precipitation annually, which averages out to around 62mm per month. The wettest month is December, averaging 110mm of rainfall. November and January also tend to see above-average precipitation. The driest month is July, with just 7mm. That's 102mm less than December, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic. Snowfall is a regular feature from January to December, with around 192cm accumulating over the season. December typically sees the most snow at around 55cm.

Post Falls is relatively calm, with an average annual wind speed of 9km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is February, averaging 9km/h, though still comfortable for most outdoor activities. The calmest conditions occur in January, with average winds dropping to 8km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 1km/h between the calmest and windiest months.

It is currently summer in Post Falls, which began on June 21, 2026. Post Falls is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in July at around 31°C, while the coldest stretch bottoms out in February near -4°C. Autumn is next, beginning on September 23, 2026 (7 days from now).

The best time to visit Post Falls is during June, July, August and September, when the weather is most comfortable for travellers. During these months, average temperatures hover around 20°C with modest rainfall averaging 21mm per month. By contrast, February can be quite cold with temperatures dropping to -4°C. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.

The table below shows monthly climate averages for Post Falls based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.