Climate averages 1991–2020
West Valley City weather
in September.
A warm, fairly dry month: the 4th warmest and the 4th driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
September is a warm month in West Valley City: daytime highs average 25.4°C and nights cool to about 12.3°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 34 mm of rain on roughly 5 days, which makes September a fairly dry month (the 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 30 min on an average September day.
The nearest other city in this atlas is West Jordan (11 km away). In September its highs average 26.1°C, 0.8°C warmer than West Valley City, with 32 mm of rain.
Among the 498 cities listed in the United States, West Valley City ranks joint 297th of 498 for the warmest September highs and joint 150th of 498 for the driest September (rainfall, lowest first). The mean September high of those 498 cities is 26.9°C; West Valley City is 1.5°C cooler than that mean.
From September to October, average highs fall by 8.4°C to 17.0°C, and monthly rainfall rises from 34 mm to 45 mm.
The annual picture
September in context
Monthly precipitation
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
West Valley City climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 1.7°C-7.1°C | -7.1°C | 52 | 9.7 | 9.610 h |
| February | 4.1°C-5.1°C | -5.1°C | 45 | 8.2 | 10.611 h |
| March | 9.9°C-1.3°C | -1.3°C | 50 | 9.5 | 11.912 h |
| April | 14.4°C2.9°C | 2.9°C | 67 | 11.2 | 13.313 h |
| May | 20.4°C7.9°C | 7.9°C | 56 | 9.1 | 14.414 h |
| June | 26.9°C13.3°C | 13.3°C | 27 | 4.4 | 15.015 h |
| July | 32.5°C18.4°C | 18.4°C | 11 | 2.8 | 14.815 h |
| August | 31.5°C17.7°C | 17.7°C | 12 | 3.4 | 13.814 h |
| September, selected | 25.4°C12.3°C | 12.3°C | 34 | 4.7 | 12.513 h |
| October | 17.0°C5.4°C | 5.4°C | 45 | 6.6 | 11.211 h |
| November | 8.6°C-1.7°C | -1.7°C | 44 | 8.2 | 10.010 h |
| December | 2.0°C-7.0°C | -7.0°C | 49 | 8.9 | 9.39 h |
Precipitation (rain or snow, as water) is the average of the 30 separate monthly totals. A wet day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
September in nearby cities
- West Jordan in SeptemberUnited States · 11 kmHigh 26.1°C · Low 11.8°C · 32 mm rain
- Salt Lake City in SeptemberUnited States · 12 kmHigh 25.3°C · Low 12.1°C · 34 mm rain
- Layton in SeptemberUnited States · 41 kmHigh 24.2°C · Low 11.3°C · 30 mm rain
- Orem in SeptemberUnited States · 51 kmHigh 24.4°C · Low 12.5°C · 28 mm rain
- Provo in SeptemberUnited States · 59 kmHigh 24.2°C · Low 13.1°C · 28 mm rain
- Ogden in SeptemberUnited States · 59 kmHigh 24.4°C · Low 11.4°C · 32 mm rain
- Saint George in SeptemberUnited States · 422 kmHigh 31.2°C · Low 19.2°C · 20 mm rain
- Boise in SeptemberUnited States · 475 kmHigh 26.2°C · Low 12.6°C · 10 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for West Valley City) is explained once on the West Valley City year overview and on the Sources, method and limits page.
Salt Lake City lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.