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Post Falls, Idaho climate
Csb Warm-summer Mediterranean
Post Falls has a seasonal cool-temperate climate (Warm-summer Mediterranean, Köppen Csb). The hottest month is July with an average daily high near 28°C, while the coldest is January averaging around −3°C at night. Precipitation totals about 644 mm a year and is strongly seasonal — December alone averages 88 mm while July barely receives 19 mm.
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figuresClear vs cloudy days
Share of days each month that are clear, partly cloudy or cloudy · 1991–2020 · hover a month for the day countsPost Falls climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 2 | 5 | 9 | 13 | 19 | 22 | 28 | 28 | 23 | 15 | 7 | 2 |
| Avg temp (°C) | 0 | 1 | 4 | 8 | 13 | 16 | 21 | 21 | 16 | 9 | 3 | 0 |
| Avg low (°C) | −3 | −3 | −1 | 3 | 7 | 11 | 14 | 13 | 9 | 4 | 0 | −3 |
| Precipitation (mm) | 82 | 54 | 68 | 49 | 54 | 55 | 19 | 20 | 21 | 51 | 85 | 88 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 2 | 5 | 9 | 13 | 19 | 22 |
| Avg temp (°C) | 0 | 1 | 4 | 8 | 13 | 16 |
| Avg low (°C) | −3 | −3 | −1 | 3 | 7 | 11 |
| Precipitation (mm) | 82 | 54 | 68 | 49 | 54 | 55 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 28 | 28 | 23 | 15 | 7 | 2 |
| Avg temp (°C) | 21 | 21 | 16 | 9 | 3 | 0 |
| Avg low (°C) | 14 | 13 | 9 | 4 | 0 | −3 |
| Precipitation (mm) | 19 | 20 | 21 | 51 | 85 | 88 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 13 | 10 | 10 | 10 | 11 | 8 | 4 | 3 | 6 | 10 | 13 | 13 |
| Days with high ≥ 32°C (days) | — | — | — | — | 0.1 | 0.8 | 7 | 7 | 1 | — | — | — |
| Days with low ≤ 0°C (days) | 22 | 20 | 14 | 6 | 0.8 | — | — | — | 0.1 | 5 | 14 | 24 |
| Days with snowfall ≥ 2.5 cm (days) | 3 | 2 | 0.8 | 0.0 | — | — | — | — | — | 0.1 | 0.8 | 3 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 13 | 10 | 10 | 10 | 11 | 8 |
| Days with high ≥ 32°C (days) | — | — | — | — | 0.1 | 0.8 |
| Days with low ≤ 0°C (days) | 22 | 20 | 14 | 6 | 0.8 | — |
| Days with snowfall ≥ 2.5 cm (days) | 3 | 2 | 0.8 | 0.0 | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 4 | 3 | 6 | 10 | 13 | 13 |
| Days with high ≥ 32°C (days) | 7 | 7 | 1 | — | — | — |
| Days with low ≤ 0°C (days) | — | — | 0.1 | 5 | 14 | 24 |
| Days with snowfall ≥ 2.5 cm (days) | — | — | — | 0.1 | 0.8 | 3 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 75 | 70 | 71 | 69 | 64 | 60 | 38 | 40 | 48 | 62 | 74 | 75 |
| Clear days (≤ 30% cloud) | 2 | 4 | 3 | 3 | 6 | 6 | 15 | 14 | 12 | 6 | 3 | 2 |
| Partly cloudy days (30–70%) | 8 | 7 | 8 | 10 | 9 | 11 | 10 | 11 | 8 | 9 | 7 | 8 |
| Cloudy days (≥ 70%) | 21 | 17 | 19 | 17 | 16 | 13 | 6 | 6 | 10 | 16 | 20 | 21 |
| Relative humidity (%) | 95 | 90 | 83 | 74 | 69 | 67 | 55 | 49 | 54 | 69 | 86 | 93 |
| Wind speed (m/s) | 1.0 | 1.1 | 1.2 | 1.1 | 1.1 | 1.1 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 75 | 70 | 71 | 69 | 64 | 60 |
| Clear days (≤ 30% cloud) | 2 | 4 | 3 | 3 | 6 | 6 |
| Partly cloudy days (30–70%) | 8 | 7 | 8 | 10 | 9 | 11 |
| Cloudy days (≥ 70%) | 21 | 17 | 19 | 17 | 16 | 13 |
| Relative humidity (%) | 95 | 90 | 83 | 74 | 69 | 67 |
| Wind speed (m/s) | 1.0 | 1.1 | 1.2 | 1.1 | 1.1 | 1.1 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 38 | 40 | 48 | 62 | 74 | 75 |
| Clear days (≤ 30% cloud) | 15 | 14 | 12 | 6 | 3 | 2 |
| Partly cloudy days (30–70%) | 10 | 11 | 8 | 9 | 7 | 8 |
| Cloudy days (≥ 70%) | 6 | 6 | 10 | 16 | 20 | 21 |
| Relative humidity (%) | 55 | 49 | 54 | 69 | 86 | 93 |
| Wind speed (m/s) | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at Coeur D'alene (NOAA GHCN station USC00101956), about 12 km from the city centre.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.