Home › Cities › United States › Idaho › Idaho Falls
Idaho Falls, Idaho climate
Dfb Warm-summer humid continental
Idaho Falls has a strongly seasonal cool-temperate climate (Warm-summer humid continental, Köppen Dfb). The hottest month is July with an average daily high near 30°C, while the coldest is January averaging around −9°C at night. Around 343 mm of precipitation falls each year, peaking in May (49 mm) and easing off in July (13 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 countsIdaho Falls climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | −1 | 2 | 9 | 14 | 20 | 25 | 30 | 30 | 24 | 15 | 6 | −1 |
| Avg temp (°C) | −5 | −2 | 4 | 8 | 13 | 17 | 22 | 21 | 16 | 8 | 1 | −4 |
| Avg low (°C) | −9 | −7 | −2 | 1 | 6 | 9 | 13 | 12 | 7 | 2 | −4 | −8 |
| Precipitation (mm) | 27 | 24 | 32 | 36 | 49 | 32 | 13 | 17 | 29 | 31 | 24 | 29 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | −1 | 2 | 9 | 14 | 20 | 25 |
| Avg temp (°C) | −5 | −2 | 4 | 8 | 13 | 17 |
| Avg low (°C) | −9 | −7 | −2 | 1 | 6 | 9 |
| Precipitation (mm) | 27 | 24 | 32 | 36 | 49 | 32 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 30 | 30 | 24 | 15 | 6 | −1 |
| Avg temp (°C) | 22 | 21 | 16 | 8 | 1 | −4 |
| Avg low (°C) | 13 | 12 | 7 | 2 | −4 | −8 |
| Precipitation (mm) | 13 | 17 | 29 | 31 | 24 | 29 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 10 | 8 | 8 | 9 | 9 | 6 | 4 | 5 | 5 | 6 | 8 | 10 |
| Days with high ≥ 32°C (days) | — | — | — | — | 0.2 | 3 | 12 | 10 | 1 | — | — | — |
| Days with low ≤ 0°C (days) | 28 | 25 | 20 | 13 | 3 | 0.4 | — | 0.1 | 2 | 13 | 24 | 27 |
| Days with snowfall ≥ 2.5 cm (days) | 4 | 3 | 1.0 | 0.4 | 0.2 | — | — | — | — | 0.3 | 2 | 4 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 10 | 8 | 8 | 9 | 9 | 6 |
| Days with high ≥ 32°C (days) | — | — | — | — | 0.2 | 3 |
| Days with low ≤ 0°C (days) | 28 | 25 | 20 | 13 | 3 | 0.4 |
| Days with snowfall ≥ 2.5 cm (days) | 4 | 3 | 1.0 | 0.4 | 0.2 | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 4 | 5 | 5 | 6 | 8 | 10 |
| Days with high ≥ 32°C (days) | 12 | 10 | 1 | — | — | — |
| Days with low ≤ 0°C (days) | — | 0.1 | 2 | 13 | 24 | 27 |
| Days with snowfall ≥ 2.5 cm (days) | — | — | — | 0.3 | 2 | 4 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 69 | 68 | 64 | 64 | 60 | 49 | 38 | 41 | 43 | 53 | 63 | 70 |
| Clear days (≤ 30% cloud) | 3 | 3 | 5 | 4 | 6 | 10 | 15 | 13 | 13 | 10 | 5 | 3 |
| Partly cloudy days (30–70%) | 10 | 10 | 11 | 11 | 12 | 12 | 10 | 12 | 9 | 10 | 11 | 10 |
| Cloudy days (≥ 70%) | 18 | 16 | 15 | 15 | 13 | 9 | 6 | 6 | 8 | 12 | 14 | 18 |
| Relative humidity (%) | 91 | 84 | 71 | 63 | 58 | 51 | 42 | 41 | 46 | 58 | 73 | 87 |
| Wind speed (km/h) | 9.2 | 10.1 | 11.0 | 10.3 | 9.1 | 9.2 | 8.3 | 8.0 | 8.0 | 8.6 | 9.0 | 9.3 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 69 | 68 | 64 | 64 | 60 | 49 |
| Clear days (≤ 30% cloud) | 3 | 3 | 5 | 4 | 6 | 10 |
| Partly cloudy days (30–70%) | 10 | 10 | 11 | 11 | 12 | 12 |
| Cloudy days (≥ 70%) | 18 | 16 | 15 | 15 | 13 | 9 |
| Relative humidity (%) | 91 | 84 | 71 | 63 | 58 | 51 |
| Wind speed (km/h) | 9.2 | 10.1 | 11.0 | 10.3 | 9.1 | 9.2 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 38 | 41 | 43 | 53 | 63 | 70 |
| Clear days (≤ 30% cloud) | 15 | 13 | 13 | 10 | 5 | 3 |
| Partly cloudy days (30–70%) | 10 | 12 | 9 | 10 | 11 | 10 |
| Cloudy days (≥ 70%) | 6 | 6 | 8 | 12 | 14 | 18 |
| Relative humidity (%) | 42 | 41 | 46 | 58 | 73 | 87 |
| Wind speed (km/h) | 8.3 | 8.0 | 8.0 | 8.6 | 9.0 | 9.3 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at Idaho Falls - Kifi (NOAA GHCN station USC00104455), about 6 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.