South Salt Lake, Utah Weather
Monsoon storms drench the south. Day 14 of summer. Read this microseason across nine climate regions →
South Salt Lake weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Mostly Clear——96°61°—
- SundayJul 5Overcast——101°67°+5°
- MondayJul 6Overcast15%—100°76°-1°
- TuesdayJul 7Overcast15%—100°78°0°
- WednesdayJul 8Clear——102°76°+2°
- ThursdayJul 9Clear——96°74°-6°
- FridayJul 10Clear——100°74°+4°
AQI 37 (Good), driven by PM2.5. AQI down 9 over the last 6 hours (gradual decline). PM2.5 at 8.3 µg/m³ (AQI 46) with a 0.85 fine-to-coarse ratio and 2 mph wind — combustion smoke trapped in calm air, not road dust.
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 8.3 µg/m³ (AQI 46) with a 0.85 fine-to-coarse ratio and 2 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.85
- Wind
- calm
- Recent rain
- 0h in last 6h
- Pattern
- stagnant smoke
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).








































If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 11:25 PM
- Moonset
- 10:37 AM
- In sign
- ♓︎ Pisces
Monsoon storms drench the south
South Salt Lake at a glance
- Today vs. normal: 72°F — typical for the season
- Last frost: April 20 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
16-Day Forecast — South Salt Lake
- Sat96°61°0%
- Sun101°67°0%
- Mon100°76°15%
- Tue100°78°15%
- Wed102°76°3%
- Thu96°74°1%
- Fri100°74°1%
- Sat107°77°5%
- Sun107°81°6%
- Mon104°80°11%
- Tue101°79°11%
- Wed103°79°15%
- Thu104°79°17%
- Fri101°80°21%
- Sat102°82°23%
- Sun105°79°16%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 4, 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.
SPC Convective Outlook
Storm Prediction Center — South Salt Lake
SPC includes South Salt Lake in the general thunderstorm area day after tomorrow — no severe risk, but storms are possible.
- TODAYNONENo severe risk
- TOMORROWNONENo severe risk
- DAY 3TSTMGeneral Thunderstorms
Thunderstorms possible. Not severe, but capable of producing lightning and brief heavy rain.
Source: NOAA / NWS Storm Prediction Center categorical convective outlook. Outlooks are re-issued multiple times per day; this page reflects the most recent SPC polygons covering the city’s coordinates.
Microseason · July 1–5
Monsoon storms drench the south
Monsoon established in southern Mountain West (New Mexico, southern Utah, Arizona north); afternoon downpours and lightning common.
Day 185 of 365 · Wedge 37 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
The year in South Salt Lake tops out in July (~81°F) and dips lowest in December (~28°F), with March wettest at 2.6 inches and June driest at 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
In South Salt Lake, NOAA NCEI 1991-2020 normals put January near 29°F and July near 81°F — a 51°F seasonal arc — with about 19.7 inches of precipitation over 147 rainy or snowy days.
Precipitation in South Salt Lake peaks in the cool season: March averages 2.6 inches across 18.6 storm-fed days, while June bottoms out at 0.5 inches over just 6.2 rainy days. It is a winter-storm rhythm South Salt Lake shares with places like Millcreek, UT, Murray, UT and Taylorsville, UT.
Once South Salt Lake passes mid-April, overnight freezes fade and kale, peas, spinach, and parsnips can be sown. Tomatoes and peppers do best set out two weeks later in South Salt Lake, once nights clear the mid-40s°F. By mid-November, frost is back in South Salt Lake — protect or harvest anything tender. South Salt Lake's low ground holds frost later into spring than South Salt Lake's benches, which run 3-5 days ahead.
Similar climates: Millcreek, UT, Murray, UT, Taylorsville, UT, Holladay, UT, Salt Lake City, UT.
Frequently asked
- When does it freeze in South Salt Lake?
- South Salt Lake's last spring frost lands near mid-April, and in South Salt Lake the first fall frost follows around mid-November.
- What is the rainy season in South Salt Lake?
- Rainfall in South Salt Lake peaks in March near 2.6 inches, out of about 20 inches annually.
- What is the warmest month in South Salt Lake?
- South Salt Lake peaks in July, when the mean runs near 81°F.
- What is the coldest month in South Salt Lake?
- December is South Salt Lake's coldest month, averaging about 28°F.
- When can I start a vegetable garden in South Salt Lake?
- In South Salt Lake, sow peas and hardy greens around mid-April; South Salt Lake's tomatoes and peppers wait two weeks more.
- How many rainy days does South Salt Lake get?
- Expect roughly 147 wet days a year in South Salt Lake.
- What hardiness zone is South Salt Lake?
- Because South Salt Lake bottoms near 28°F in December, that winter low sets South Salt Lake's USDA zone — verify by ZIP.
- What is the 10-day forecast for South Salt Lake?
- South Salt Lake'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 South Salt Lake?
- See this week's day-by-day rain chances for South Salt Lake in the daily forecast above, and the next 24 hours in the hourly chart.
- What is the weather like right now in South Salt Lake?
- Current conditions for South Salt Lake and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
- How often is the South Salt Lake forecast updated?
- The South Salt Lake forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
- When are sunrise and sunset in South Salt Lake?
- Today's sunrise and sunset times for South Salt Lake 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 South Salt Lake?
- The next few days in South Salt Lake's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.
Climate
Set in a cold semi-arid zone, South Salt Lake, Utah swings from 29°F in the heart of winter to 81°F at midsummer — a 52°F arc.
Rain and snow bring South Salt Lake roughly 20 inches a year across approximately 147 measurable-precipitation days.
South Salt Lake's 52°F range, set by its 40.7°N position, drives frost timing and what thrives in South Salt Lake.
ZIP codes in South Salt Lake
- 84119
- 84115
- 84165
- 84190