Post Falls climate — normals and trends
Post Falls (United States) has a warm-summer mediterranean continental climate (Dsb) under the Köppen-Geiger classification. Its mean annual temperature is 8.6 °C and it receives 752 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is July (21.1 °C on average) and the coldest is January (-2.6 °C). Rainfall peaks in December.
Post Falls averages 118 frost days, 27 hot days (≥ 30 °C) and 123 rainy days per year.
Post Falls has warmed by +2.2 °C between 1940 and 2025, or +0.26 °C per decade. This trend is statistically significant.
The number of frost days there went from about 136 to 100 per year over the period.
The hottest day of the period reached 43.0 °C (on 29 June 2021) and the coldest -29.5 °C (on 1 January 1979).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
Post FallsIdaho
- coords
- 47.72°, -116.95°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
8.6°C
Average daily high
13.6°C
Average daily low
3.6°C
Annual rainfall
752mm
Sunshine / day
9.4h
Mean relative humidity
67%
Average peak wind
13.5km/h
Seasonal range
23.7°C
Frost days (< 0 °C)
118 d/yr
Hot days (≥ 30 °C)
27 d/yr
Rainy days (≥ 1 mm)
123 d/yr
Annual snowfall
149.2 cm
Average feels-like high
10.9 °C
Average feels-like low
0.6 °C
Average peak gust
35.0 km/h
Tropical nights (≥ 20 °C)
1 d/yr
Solar radiation
14.7 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.2 °C
since 1940
+0.3 °C per decade · r² = 0.45 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
43.0 °C
29 June 2021
Coldest day
-29.5 °C
1 January 1979
Wettest day
44 mm
22 December 1964
Windiest day
46.0 km/h
17 December 2025
Strongest gust
126.0 km/h
17 December 2025
Hottest feels-like
42.9 °C
29 June 2021
Coldest feels-like
-34.5 °C
1 January 1979
Snowiest day
23.1 cm
18 December 1951
Sunniest day
15.7 h
1 July 2025
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 1.3 °C | +1.0 °C | 46 mm | -49 mm |
| Feb | 1.1 °C | -2.2 °C | 95 mm | +22 mm |
| Mar | 10.4 °C | +2.8 °C | 118 mm | +37 mm |
| Apr | 15.2 °C | +2.2 °C | 40 mm | -24 mm |
| May | 20.0 °C | +1.8 °C | 28 mm | -32 mm |
| Jun | 25.4 °C | +3.1 °C | 6 mm | -41 mm |
| Jul | 29.6 °C | +1.5 °C | 9 mm | -8 mm |
| Aug | 29.5 °C | +2.0 °C | 11 mm | -11 mm |
| Sep | 27.0 °C | +5.1 °C | 11 mm | -23 mm |
| Oct | 14.1 °C | +0.2 °C | 78 mm | +17 mm |
| Nov | 8.0 °C | +2.7 °C | 90 mm | -10 mm |
| Dec | 5.7 °C | +4.5 °C | 163 mm | +63 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Post Falls?
Post Falls has a warm-summer mediterranean continental climate (Köppen Dsb). Over 1940-2025, the average annual temperature is 8.6 °C and it receives 752 mm of precipitation per year.
What is the hottest day ever recorded in Post Falls?
The hottest day measured in Post Falls between 1940 and 2025 was 29 June 2021, reaching 43.0 °C.
What is the coldest day in Post Falls?
The coldest day measured in Post Falls between 1940 and 2025 was 1 January 1979, at -29.5 °C.
Does it snow in Post Falls?
Yes. Post Falls gets on average 149.2 cm of snow per year and has around 118 frost days.
Has the climate of Post Falls warmed?
Yes: Post Falls warmed by +2.2 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Post Falls?
The wettest day measured in Post Falls between 1940 and 2025 was 22 December 1964, with 44 mm of rain in 24 hours.
What was the windiest day in Post Falls?
The windiest day measured in Post Falls between 1940 and 2025 was 17 December 2025, with winds reaching 46.0 km/h.
What is the warmest month in Post Falls?
The warmest month in Post Falls is July (21.1 °C on average); the coldest is January (-2.6 °C).
How much does it rain in Post Falls?
Post Falls receives on average 752 mm of precipitation per year, spread over about 123 rainy days.
Is it sunny in Post Falls?
Post Falls gets on average 9.4 hours of sunshine per day, roughly 3,431 hours per year over 1940-2025.
What is the biggest single-day snowfall in Post Falls?
The heaviest 24-hour snowfall measured in Post Falls between 1940 and 2025 was 18 December 1951, with 23.1 cm.
Are there tropical nights in Post Falls?
Yes: Post Falls has on average 1 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Post Falls?
In Post Falls, between 1940 and 2025, the highest apparent temperature reached 42.9 °C on 29 June 2021, and the lowest was -34.5 °C on 1 January 1979.
Compare Post Falls with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Post Falls