West Valley City, Utah Weather
Summer heat breaks with monsoon. Day 43 of summer. Read this microseason across nine climate regions →
West Valley City weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayAug 2Overcast——101°76°—
- MondayAug 3Clear——90°71°-11°
- TuesdayAug 4Overcast——90°62°0°
- WednesdayAug 5Overcast——95°67°+5°
- ThursdayAug 6Clear——100°71°+5°
- FridayAug 7Clear——104°73°+4°
- SaturdayAug 8Partly Cloudy——104°74°0°
AQI 53 (Moderate), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 10.0 µg/m³, PM10 at 11.7 µg/m³ — typical background levels with no transport signature.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
PM × Wind × Precip
PM2.5 at 10.0 µg/m³, PM10 at 11.7 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.85
- Wind
- breezy
- Recent rain
- 0h in last 6h
- Pattern
- background
Trends
Seven days of AQI and PM2.5.
Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).








































Red sky at night, sailor's delight.
- Moonrise
- 10:13 PM
- Moonset
- 10:37 AM
- In sign
- ♓︎ Pisces
Summer heat breaks with monsoon
West Valley City at a glance
- Today vs. normal: 24°F above the seasonal normal for this latitude
- Last frost: April 20 (climatological average for this latitude)
- Microseason: Aug 1–5
- Planting window: Sow fall peas. Start kale and collard seedlings for fall.
ZIP codes: 84119, 84120, 84128
16-Day Forecast — West Valley City
- Sun101°76°0%
- Mon90°71°1%
- Tue90°62°0%
- Wed95°67°0%
- Thu100°71°0%
- Fri104°73°1%
- Sat104°74°4%
- Sun105°73°11%
- Mon103°77°14%
- Tue100°74°14%
- Wed100°72°12%
- Thu94°73°31%
- Fri94°66°32%
- Sat98°74°30%
- Sun97°73°20%
- Mon94°71°19%
Forecast data from Open-Meteo (CC BY 4.0).
Live wind & temperature near West Valley City
Right now in the garden
Peak growing season
As of August 2, the growing season is at its peak — frost is months away. Continue succession-planting beans and summer squash. Start fall brassicas (broccoli, cabbage, kale) from seed indoors for transplanting in late summer.
Sun & seasons in West Valley City
West Valley City sits in Salt Lake County, where the year’s longest day runs 15h 5m of daylight and its shortest just 9h 15m — a swing of +5h 50m between the June and December solstices. Clocks spring forward on Sunday, March 8, 2026 and fall back on Sunday, November 1, 2026.
Salt Lake City, the state’s largest city, lies about 7 miles to the NE. The nearest town West Valley City tracks is Salt Lake City, roughly 7 miles to the NE.
Air quality in West Valley City’s county has trended cleaner since 2020; its cleanest year on record was 2020 (median AQI 54). See the full air-quality history for West Valley City.
Microseason · August 1–5
Summer heat breaks with monsoon
Late summer monsoon surge; southern reaches drench under Gulf moisture; northern peaks cool rapidly as monsoon remnants push north.
Day 214 of 365 · Wedge 43 of 72
Planting calendar
| Month | Plant | Harvest |
|---|---|---|
| January | — | — |
| February | — | — |
| March | — | — |
| April | lettuce, peas, spinach, radishes | — |
| May | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| June | tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| July | tomatoes, peppers, beans, squash | tomatoes, beans, summer squash |
| August | — | tomatoes, beans, summer squash |
| September | fall brassicas, garlic (overwinter), carrots | tomatoes, beans, summer squash |
| October | fall brassicas, garlic (overwinter), carrots | winter squash, tomatoes (last) |
| November | — | — |
| December | — | — |
A year in weather
July is West Valley City's warmest stretch (~81°F) and December its coldest (~28°F); precipitation crests in March at 2.6 inches and ebbs in June to 0.5 inches.
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 29° | 2.0″ | 16 |
| February | 32° | 1.8″ | 15 |
| March | 38° | 2.6″ | 19 |
| April | 46° | 2.4″ | 16 |
| May | 58° | 1.7″ | 13 |
| June | 71° | 0.5″ | 6 |
| July | 81° | 0.7″ | 7 |
| August | 79° | 0.9″ | 8 |
| September | 68° | 1.2″ | 8 |
| October | 53° | 1.3″ | 8 |
| November | 37° | 2.3″ | 14 |
| December | 28° | 2.2″ | 17 |
Regional context
West Valley City's climate, from NOAA NCEI 1991-2020 station normals, pairs 29°F Januarys with 81°F Julys — a 51°F swing. About 19.7 inches of precipitation falls over roughly 147 days a year.
Cool-season fronts carry West Valley City's rain: March logs 2.6 inches on 18.6 days, against June's 0.5 inches on 6.2 — winter does the heavy lifting in West Valley City. That groups West Valley City with places like Kearns, UT, Taylorsville, UT and West Jordan, UT on the same cool-season storm track.
The cool-season window in West Valley City starts at mid-April, when nights stop freezing — think kale, peas, spinach, and parsnips. In West Valley City, warm-season transplants — tomatoes, peppers, basil — wait two weeks past West Valley City's frost date. West Valley City's window closes around mid-November as overnight lows return below freezing. In West Valley City, low spots run 4-7°F colder than nearby slopes, nudging West Valley City's frost dates a week.
Similar climates: Kearns, UT, Taylorsville, UT, West Jordan, UT, South Salt Lake, UT, Murray, UT.
Naturalist notes
By late May, yellow sweet clover (Melilotus officinalis) is flowering along roadsides and open lots in the Salt Lake Valley.
Barn swallows return to the area in April and can be seen feeding over open water and fields through late spring.
Frequently asked
- When does it freeze in West Valley City?
- Frost typically leaves West Valley City by mid-April and returns to West Valley City near mid-November.
- What is the rainy season in West Valley City?
- Rainfall in West Valley City peaks in March near 2.6 inches, out of about 20 inches annually.
- What is the warmest month in West Valley City?
- The warmest stretch in West Valley City comes in July, around 81°F on average.
- What is the coldest month in West Valley City?
- On average December is the chilliest month in West Valley City, about 28°F.
- When can I start a vegetable garden in West Valley City?
- Time tomatoes in West Valley City for two weeks after mid-April; peas and greens start at West Valley City's frost line.
- How many rainy days does West Valley City get?
- West Valley City averages about 147 days with measurable rain or snow each year.
- What hardiness zone is West Valley City?
- West Valley City's USDA zone comes from its December mean (28°F); enter the ZIP on the USDA lookup for the number.
- What is the 10-day forecast for West Valley City?
- West Valley City's extended outlook — daily high and low temperatures and precipitation chances for each upcoming day — is in the daily forecast above.
- Will it rain this week in West Valley City?
- See this week's day-by-day rain chances for West Valley City in the daily forecast above, and the next 24 hours in the hourly chart.
- What is the weather like right now in West Valley City?
- Current conditions for West Valley City and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
- How often is the West Valley City forecast updated?
- The West Valley City forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
- When are sunrise and sunset in West Valley City?
- Today's sunrise and sunset times for West Valley City are in the Almanac section above, along with civil dawn, civil dusk, and day length. Day length is longest near the summer solstice and shortest near the winter solstice.
- How accurate is the weather forecast for West Valley City?
- The next few days in West Valley City's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.
Climate
West Valley City's cold semi-arid climate in Utah pairs 29°F Januarys with 81°F Julys, 52°F apart across the seasons.
Rain and snow bring West Valley City roughly 20 inches a year across approximately 147 measurable-precipitation days.
The 52°F gap between West Valley City's summer and winter, at 40.7°N, shapes West Valley City's frost calendar.
ZIP codes in West Valley City
- 84119
- 84120
- 84128
- 84118
- 84125
- 84126
- 84127
- 84130
- 84131
- 84170