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Holladay, Utah climate
Csa Hot-summer Mediterranean
Holladay has a strongly seasonal cool-temperate climate (Hot-summer Mediterranean, Köppen Csa). The hottest month is July with an average daily high near 33°C, while the coldest is January averaging around −5°C at night. Precipitation totals about 618 mm a year and is strongly seasonal — April alone averages 85 mm while July barely receives 15 mm. Snowfall is heavy (208 cm of snow per year on average).
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation split into rain and snow · 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 countsHolladay climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 3 | 7 | 12 | 16 | 21 | 28 | 33 | 31 | 26 | 18 | 10 | 4 |
| Avg temp (°C) | −1 | 2 | 7 | 10 | 15 | 21 | 26 | 25 | 20 | 12 | 5 | −1 |
| Avg low (°C) | −5 | −3 | 1 | 4 | 9 | 14 | 20 | 19 | 14 | 6 | 0 | −5 |
| Precipitation (mm) | 55 | 59 | 68 | 85 | 72 | 35 | 15 | 23 | 41 | 53 | 53 | 60 |
| Snowfall (cm) | 43 | 47 | 19 | 14 | 1 | — | — | — | — | 4 | 21 | 59 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 3 | 7 | 12 | 16 | 21 | 28 |
| Avg temp (°C) | −1 | 2 | 7 | 10 | 15 | 21 |
| Avg low (°C) | −5 | −3 | 1 | 4 | 9 | 14 |
| Precipitation (mm) | 55 | 59 | 68 | 85 | 72 | 35 |
| Snowfall (cm) | 43 | 47 | 19 | 14 | 1 | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 33 | 31 | 26 | 18 | 10 | 4 |
| Avg temp (°C) | 26 | 25 | 20 | 12 | 5 | −1 |
| Avg low (°C) | 20 | 19 | 14 | 6 | 0 | −5 |
| Precipitation (mm) | 15 | 23 | 41 | 53 | 53 | 60 |
| Snowfall (cm) | — | — | — | 4 | 21 | 59 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 9 | 8 | 9 | 10 | 9 | 5 | 3 | 5 | 6 | 8 | 8 | 9 |
| Days with high ≥ 32°C (days) | — | — | — | — | 0.3 | 7 | 20 | 17 | 2 | — | — | — |
| Days with low ≤ 0°C (days) | 26 | 20 | 12 | 6 | 0.7 | — | — | — | — | 3 | 16 | 26 |
| Days with snowfall ≥ 2.5 cm (days) | 4 | 3 | 2 | 1 | 0.1 | — | — | — | — | 0.5 | 2 | 5 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 9 | 8 | 9 | 10 | 9 | 5 |
| Days with high ≥ 32°C (days) | — | — | — | — | 0.3 | 7 |
| Days with low ≤ 0°C (days) | 26 | 20 | 12 | 6 | 0.7 | — |
| Days with snowfall ≥ 2.5 cm (days) | 4 | 3 | 2 | 1 | 0.1 | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 3 | 5 | 6 | 8 | 8 | 9 |
| Days with high ≥ 32°C (days) | 20 | 17 | 2 | — | — | — |
| Days with low ≤ 0°C (days) | — | — | — | 3 | 16 | 26 |
| Days with snowfall ≥ 2.5 cm (days) | — | — | — | 0.5 | 2 | 5 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 59 | 62 | 63 | 63 | 59 | 43 | 42 | 43 | 39 | 46 | 55 | 60 |
| Clear days (≤ 30% cloud) | 7 | 5 | 5 | 5 | 7 | 13 | 13 | 12 | 14 | 12 | 8 | 6 |
| Partly cloudy days (30–70%) | 12 | 11 | 12 | 11 | 11 | 10 | 11 | 13 | 9 | 9 | 9 | 12 |
| Cloudy days (≥ 70%) | 13 | 13 | 14 | 14 | 13 | 7 | 7 | 7 | 7 | 10 | 13 | 13 |
| Relative humidity (%) | 80 | 74 | 64 | 59 | 52 | 43 | 37 | 37 | 41 | 50 | 64 | 77 |
| Wind speed (km/h) | 5.8 | 6.8 | 7.6 | 8.1 | 7.3 | 7.6 | 6.9 | 6.9 | 6.8 | 6.6 | 6.2 | 5.7 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 59 | 62 | 63 | 63 | 59 | 43 |
| Clear days (≤ 30% cloud) | 7 | 5 | 5 | 5 | 7 | 13 |
| Partly cloudy days (30–70%) | 12 | 11 | 12 | 11 | 11 | 10 |
| Cloudy days (≥ 70%) | 13 | 13 | 14 | 14 | 13 | 7 |
| Relative humidity (%) | 80 | 74 | 64 | 59 | 52 | 43 |
| Wind speed (km/h) | 5.8 | 6.8 | 7.6 | 8.1 | 7.3 | 7.6 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 42 | 43 | 39 | 46 | 55 | 60 |
| Clear days (≤ 30% cloud) | 13 | 12 | 14 | 12 | 8 | 6 |
| Partly cloudy days (30–70%) | 11 | 13 | 9 | 9 | 9 | 12 |
| Cloudy days (≥ 70%) | 7 | 7 | 7 | 10 | 13 | 13 |
| Relative humidity (%) | 37 | 37 | 41 | 50 | 64 | 77 |
| Wind speed (km/h) | 6.9 | 6.9 | 6.8 | 6.6 | 6.2 | 5.7 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at Cottonwood Weir (NOAA GHCN station USC00421759), about 7 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.