Weather in Sun Valley, Nevada
Fog and sun in daily rhythm. Day 59 of spring. Read this microseason across nine climate regions →
- TodayMay 16Overcast—67°49°
- SundayMay 17Overcast—50°40°
- MondayMay 18Clear—61°34°
- TuesdayMay 19Partly Cloudy—69°44°
- WednesdayMay 20Overcast—76°52°
- ThursdayMay 21Overcast—78°54°
- FridayMay 22Overcast—82°56°
- PM 2.5
- 1.8 μg/m³
- PM 10
- 3.2 μg/m³
- NO₂
- 0.7 μg/m³
- Ozone
- 110.0 μg/m³
- UV Index
- 0.2 Low
When the dew is on the grass, rain will never come to pass.
- Moonrise
- 12:54 PM
- Moonset
- 3:43 AM
- In sign
- ♊︎ Gemini
Fog and sun in daily rhythm
Sun Valley at a glance
- Today vs. normal: 12°F below the seasonal normal for this latitude
- Last frost: April 14 (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
Sun Valley's warmest month is July (~77°F mean) and its coldest is December (~36°F). Rainfall peaks in January (1.3 inches) and bottoms out in August (0.2 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 37° | 1.3″ | 3 |
| February | 40° | 1.0″ | 3 |
| March | 45° | 0.9″ | 2 |
| April | 50° | 0.5″ | 2 |
| May | 59° | 0.6″ | 2 |
| June | 68° | 0.5″ | 1 |
| July | 77° | 0.3″ | 1 |
| August | 75° | 0.2″ | 1 |
| September | 68° | 0.2″ | 1 |
| October | 55° | 0.6″ | 2 |
| November | 44° | 0.7″ | 2 |
| December | 36° | 1.2″ | 3 |
Regional context
Sun Valley sits within a hot-summer Mediterranean climate region — a cohort that shares similar temperature ranges, seasonal patterns, and growing conditions across nearby cities.
Similar climates: Reno, NV, Sparks, NV, Carson City, NV, Fernley, NV, Spanish Springs, NV.
Frequently asked
- When does it freeze in Sun Valley?
- Sun Valley's last spring frost typically falls around mid-April, and the first fall frost arrives around mid-November.
- What is the rainy season in Sun Valley?
- January is the wettest month with about 1.3 inches of rain on average; the city receives roughly 8 inches annually.
- What is the warmest month in Sun Valley?
- July is typically warmest, averaging about 77°F.
- What is the coldest month in Sun Valley?
- December is typically coldest, averaging about 36°F.
- When can I start a vegetable garden in Sun Valley?
- 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 Sun Valley get?
- Sun Valley averages about 23 rainy days per year.
- What hardiness zone is Sun Valley?
- Sun Valley'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
Sun Valley, Nevada sits in a hot-summer Mediterranean climate zone. January means hover near 37°F while July averages 77°F — a 40°F seasonal swing.
Across the year, Sun Valley receives about 8 inches of precipitation spread over roughly 23 rainy days.
The rhythm of the year is set by latitude (39.6°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.