Summerlin South, Nevada Weather
Heat hardens the dust. Day 77 of spring. Read this microseason across nine climate regions →
Summerlin South weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 3Partly Cloudy——98°76°—
- ThursdayJun 4Clear——100°77°+2°
- FridayJun 5Overcast——100°73°0°
- SaturdayJun 6Overcast——94°78°-6°
- SundayJun 7Overcast——93°74°-1°
- MondayJun 8Clear——94°74°+1°
- TuesdayJun 9Partly Cloudy——92°73°-2°
PM2.5 at 6.4 µg/m³, PM10 at 9.1 µg/m³ — typical background levels with no transport signature. AQI down 10 over the last 6 hours (steady decline since this morning).
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion during the projected peak around 7 AM.
What's driving it
Ozone × UV × Sky
Ozone at AQI 31 now. With UV 0.0 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 7 by mid-afternoon.
- Present
- AQI 31
- UV peak
- 0.0 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 7
PM × Wind × Precip
PM2.5 at 6.4 µg/m³, PM10 at 9.1 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.70
- 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).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 6:00 AM
- Moonset
- 3:59 PM
- In sign
- ♑︎ Capricorn
Heat hardens the dust
Summerlin South at a glance
- Today vs. normal: 6°F above the seasonal normal for this latitude
- Last frost: March 24 (climatological average for this latitude)
- Microseason: Jun 1–5
- Planting window: Harvest spring lettuce before it bolts. Sow heat-tolerant greens.
Right now in the garden
Peak growing season
As of June 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.
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
Summerlin South's warmest month is July (~93°F mean) and its coldest is December (~47°F). Rainfall peaks in February (0.9 inches) and bottoms out in May (0.1 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 48° | 0.6″ | 2 |
| February | 53° | 0.9″ | 2 |
| March | 60° | 0.5″ | 1 |
| April | 67° | 0.3″ | 1 |
| May | 76° | 0.1″ | 0 |
| June | 87° | 0.1″ | 0 |
| July | 93° | 0.4″ | 1 |
| August | 91° | 0.4″ | 1 |
| September | 83° | 0.4″ | 1 |
| October | 69° | 0.4″ | 1 |
| November | 56° | 0.3″ | 1 |
| December | 47° | 0.5″ | 1 |
Regional context
Summerlin South sits within a hot desert climate region — a cohort that shares similar temperature ranges, seasonal patterns, and growing conditions across nearby cities.
Similar climates: Las Vegas, NV, Henderson, NV, North Las Vegas, NV, Enterprise, NV, Spring Valley, NV.
Frequently asked
- When does it freeze in Summerlin South?
- Summerlin South's last spring frost typically falls around mid-April, and the first fall frost arrives around mid-November.
- What is the rainy season in Summerlin South?
- February is the wettest month with about 0.9 inches of rain on average; the city receives roughly 5 inches annually.
- What is the warmest month in Summerlin South?
- July is typically warmest, averaging about 93°F.
- What is the coldest month in Summerlin South?
- December is typically coldest, averaging about 47°F.
- When can I start a vegetable garden in Summerlin South?
- Cool-season crops (peas, lettuce) can be sown around the last spring frost (mid-April); warm-season crops (tomatoes, peppers) wait until 1–2 weeks after.
- How many rainy days does Summerlin South get?
- Summerlin South averages about 12 rainy days per year.
- What hardiness zone is Summerlin South?
- Summerlin South's USDA hardiness zone is determined by its lowest average winter temperature; check the USDA's online lookup with the city ZIP for the current zone designation.
Climate
Summerlin South, Nevada sits in a hot desert climate zone. January means hover near 48°F while July averages 93°F — a 44°F seasonal swing.
Across the year, Summerlin South receives about 5 inches of precipitation spread over roughly 12 rainy days.
The rhythm of the year is set by latitude (36.1°N), proximity to large water bodies, and elevation — all of which shape what grows here, when frost is likely, and what the weather story looks like day to day.