Weather in Summerlin South, Nevada
Saguaro crowns open white. Day 59 of spring. Read this microseason across nine climate regions →
- TodayMay 16Overcast—89°71°
- SundayMay 17Overcast—86°58°
- MondayMay 18Overcast—74°53°
- TuesdayMay 19Clear—79°65°
- WednesdayMay 20Overcast—86°69°
- ThursdayMay 21Overcast—91°74°
- FridayMay 22Clear—93°75°
- PM 2.5
- 5.7 μg/m³
- PM 10
- 13.4 μg/m³
- NO₂
- 6.0 μg/m³
- Ozone
- 100.0 μg/m³
- UV Index
- 0.0 Low
When the dew is on the grass, rain will never come to pass.
- Moonrise
- 12:48 PM
- Moonset
- 3:12 AM
- In sign
- ♊︎ Gemini
Saguaro crowns open white
Summerlin South at a glance
- Today vs. normal: 77°F — typical for the season
- Last frost: March 24 (climatological average for this latitude)
- Microseason: 28 of 72, May 16–20
- Planting window: Direct sow okra, melons, and southern peas. Thin carrot rows.
Right now in the garden
Warm-season window is open
As of May 17, the last spring frost has passed for most years. Transplant tomatoes, peppers, eggplants, basil, and cucurbits (cucumbers, squash, melons) now. Direct-sow beans and corn into warm soil.
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.