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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 86°F, while the coldest is January averaging around 16°F at night. Around 13 inches of precipitation falls each year, peaking in May (1.9 inches) and easing off in July (0.5 inches).
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 (°F) | 30 | 36 | 48 | 58 | 67 | 77 | 86 | 86 | 75 | 59 | 43 | 31 |
| Avg temp (°F) | 23 | 28 | 38 | 46 | 55 | 63 | 71 | 70 | 60 | 47 | 34 | 24 |
| Avg low (°F) | 16 | 20 | 29 | 34 | 42 | 49 | 55 | 54 | 45 | 35 | 25 | 17 |
| Precipitation (in) | 1.1 | 1.0 | 1.3 | 1.4 | 1.9 | 1.3 | 0.5 | 0.7 | 1.1 | 1.2 | 1.0 | 1.1 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 30 | 36 | 48 | 58 | 67 | 77 |
| Avg temp (°F) | 23 | 28 | 38 | 46 | 55 | 63 |
| Avg low (°F) | 16 | 20 | 29 | 34 | 42 | 49 |
| Precipitation (in) | 1.1 | 1.0 | 1.3 | 1.4 | 1.9 | 1.3 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 86 | 86 | 75 | 59 | 43 | 31 |
| Avg temp (°F) | 71 | 70 | 60 | 47 | 34 | 24 |
| Avg low (°F) | 55 | 54 | 45 | 35 | 25 | 17 |
| Precipitation (in) | 0.5 | 0.7 | 1.1 | 1.2 | 1.0 | 1.1 |
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 ≥ 90°F (days) | — | — | — | — | 0.2 | 3 | 12 | 10 | 1 | — | — | — |
| Days with low ≤ 32°F (days) | 28 | 25 | 20 | 13 | 3 | 0.4 | — | 0.1 | 2 | 13 | 24 | 27 |
| Days with snowfall ≥ 1 in (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 ≥ 90°F (days) | — | — | — | — | 0.2 | 3 |
| Days with low ≤ 32°F (days) | 28 | 25 | 20 | 13 | 3 | 0.4 |
| Days with snowfall ≥ 1 in (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 ≥ 90°F (days) | 12 | 10 | 1 | — | — | — |
| Days with low ≤ 32°F (days) | — | 0.1 | 2 | 13 | 24 | 27 |
| Days with snowfall ≥ 1 in (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 (mph) | 5.7 | 6.3 | 6.8 | 6.4 | 5.7 | 5.7 | 5.1 | 5.0 | 5.0 | 5.3 | 5.6 | 5.7 |
| 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 (mph) | 5.7 | 6.3 | 6.8 | 6.4 | 5.7 | 5.7 |
| 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 (mph) | 5.1 | 5.0 | 5.0 | 5.3 | 5.6 | 5.7 |
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.