Nevada weather and outdoor projects
Nevada is the driest state. Las Vegas has extremely hot summers, often above 105°F, and mild winters, so most outdoor projects there are best from October to April, with early starts in hot weather. Reno and northern Nevada are cooler, with cold winter nights and big swings between day and night.
Low humidity means fast drying, which can cause lap marks in stain and paint and cracking in concrete. Wind is common, especially in spring. Rain is rare, but summer monsoon storms in the south can bring sudden downpours and dust.
Frost dates in Nevada
In Las Vegas, the median last spring freeze (32°F) is around January 20 and the median first fall freeze is around December 15, a frost-free season of about 333 days.
In Reno, the median last spring freeze (32°F) is around April 20 and the median first fall freeze is around October 23, a frost-free season of about 184 days.
Frost dates matter for concrete, which must not freeze in its first 48 hours, for paint and caulk that need nights above their minimum, and for lawn care, since crabgrass preventer goes down as the soil warms in spring. See how late in fall you can stain, paint or seal.
Best time to stain a deck in Nevada
In Las Vegas, the most reliable months are March–April and October. May and November–February can also work on the right days. June–September is hot, with average highs near 100°F and about 28 days a month at 90°F or more, so work early in the day. December–January is cool, with highs around 58°F, so choose the warmest afternoons. In February and November, nights average about 46°F, so finish early on mild days and check the overnight low. May is hot, with highs near 89°F, so start early and keep out of full afternoon sun.
In Reno, the most reliable months are June and September. April–May and October can also work on the right days. December–February is too cold, with average highs around 49°F. In March and November, nights average about 33°F, too cold for the coating to dry and cure overnight. July–August is hot, with average highs near 93°F and about 23 days a month at 90°F or more, so work early in the day. In April–May and October, nights average about 42°F, so finish early on mild days and check the overnight low.
Check this week’s hour-by-hour verdict with the deck staining forecast.
Best time to paint outside in Nevada
In Las Vegas, the most reliable months are March–April and October–November. May and December–February can also work on the right days. June–September is hot, with average highs near 100°F and about 28 days a month at 90°F or more, so work early in the day. In January–February, nights average about 42°F, so finish early on mild days and check the overnight low. May is hot, with highs near 89°F, so start early and keep out of full afternoon sun. December is cool, with highs around 57°F, so choose the warmest afternoons.
In Reno, the most reliable months are May–June and September. March–April and October can also work on the right days. December–January is too cold, with average highs around 47°F. In February and November, nights average about 30°F, too cold for the coating to dry and cure overnight. July–August is hot, with average highs near 93°F and about 23 days a month at 90°F or more, so work early in the day. In March–April and October, nights average about 37°F, so finish early on mild days and check the overnight low.
Check this week’s hour-by-hour verdict with the exterior painting forecast.
Best time to pour concrete in Nevada
In Las Vegas, the most reliable months are February–May and September–November. June–August and December–January can also work on the right days. December–January brings about 4 freezing nights a month, so pick a mild spell and keep curing blankets on hand. June–August is hot, with highs near 102°F, so start early and keep out of full afternoon sun.
In Reno, the most reliable months are May–September. April and October can also work on the right days. November–March averages about 22 nights a month at or below 32°F, so fresh concrete needs blankets or heated enclosures. April and October bring about 6 freezing nights a month, so pick a mild spell and keep curing blankets on hand.
Check this week’s hour-by-hour verdict with the concrete pouring forecast.
Best time to seal a driveway in Nevada
In Las Vegas, the most reliable months are April–May and September–October. February–March, June–August and November can also work on the right days. December–January is too cold, with average highs around 58°F. February and November are cool, with highs around 65°F, so choose the warmest afternoons. In March, nights average about 51°F, so finish early on mild days and check the overnight low. June–August is hot, with highs near 102°F, so start early and keep out of full afternoon sun.
In Reno, the most reliable months are June–August. May and September can also work on the right days. November–March is too cold, with average highs around 52°F. In April and October, nights average about 39°F, too cold for the coating to dry and cure overnight. In May and September, nights average about 48°F, so finish early on mild days and check the overnight low.
Check this week’s hour-by-hour verdict with the driveway sealing forecast.
Best time to fertilize or treat a lawn in Nevada
In Las Vegas, the most reliable months are February–April and October–November. May and December–January can also work on the right days. June–September is hot, with average highs near 100°F and about 28 days a month at 90°F or more, so work early in the day. December–January is cool, with highs around 58°F, so choose the warmest afternoons. May is hot, with highs near 89°F, so start early and keep out of full afternoon sun.
In Reno, the most reliable months are April–June and September–October. February–March and November can also work on the right days. December–January is too cold, with average highs around 47°F. July–August is hot, with average highs near 93°F and about 23 days a month at 90°F or more, so work early in the day. February–March and November are cool, with highs around 56°F, so choose the warmest afternoons.
Check this week’s hour-by-hour verdict with the lawn fertilizer forecast.
How the weather differs across Nevada
| Place | Hottest month avg high | Coldest month avg low | Rain per year | Last spring freeze | First fall freeze |
|---|---|---|---|---|---|
| Las Vegas | 105°F | 40°F | 4 in | January 20 | December 15 |
| Reno | 94°F | 26°F | 7 in | April 20 | October 23 |
Of the places above, Las Vegas has the most good months for staining, painting and concrete combined (14 job-months), and Reno has the fewest (10). If you live between them, expect something in between, and higher ground to be cooler with a shorter season.
Monthly weather in Las Vegas
| Month | Avg high | Avg low | Wet days* | Rain | 3 PM humidity | Freezing nights |
|---|---|---|---|---|---|---|
| January | 59°F | 41°F | 2 | 0.6 in | 27% | 3 |
| February | 63°F | 44°F | 2 | 0.8 in | 24% | 1 |
| March | 71°F | 51°F | 1 | 0.4 in | 18% | 0 |
| April | 79°F | 57°F | 1 | 0.2 in | 14% | 0 |
| May | 89°F | 66°F | 0 | 0.1 in | 12% | 0 |
| June | 99°F | 76°F | 0 | 0.0 in | 9% | 0 |
| July | 105°F | 82°F | 1 | 0.4 in | 13% | 0 |
| August | 103°F | 81°F | 1 | 0.3 in | 14% | 0 |
| September | 95°F | 72°F | 1 | 0.3 in | 14% | 0 |
| October | 81°F | 60°F | 1 | 0.3 in | 16% | 0 |
| November | 67°F | 47°F | 1 | 0.3 in | 21% | 1 |
| December | 57°F | 40°F | 1 | 0.5 in | 27% | 5 |
*Days with at least 0.1 inch of rain or melted snow. Freezing nights: average nights a month at or below 32°F. Humidity is calculated from NOAA hourly normal temperature and dew point at 3 PM.
Monthly weather in Reno
| Month | Avg high | Avg low | Wet days* | Rain | 3 PM humidity | Freezing nights |
|---|---|---|---|---|---|---|
| January | 48°F | 26°F | 3 | 1.3 in | 42% | 26 |
| February | 52°F | 29°F | 3 | 1.0 in | 34% | 22 |
| March | 59°F | 34°F | 2 | 0.8 in | 26% | 15 |
| April | 65°F | 39°F | 2 | 0.4 in | 22% | 7 |
| May | 74°F | 47°F | 2 | 0.6 in | 20% | 1 |
| June | 85°F | 54°F | 1 | 0.4 in | 16% | 0 |
| July | 94°F | 60°F | 1 | 0.2 in | 14% | 0 |
| August | 92°F | 58°F | 1 | 0.2 in | 14% | 0 |
| September | 84°F | 50°F | 1 | 0.2 in | 16% | 0 |
| October | 70°F | 40°F | 1 | 0.5 in | 21% | 5 |
| November | 57°F | 31°F | 2 | 0.6 in | 32% | 19 |
| December | 47°F | 26°F | 2 | 1.1 in | 43% | 27 |
Use the averages, then check the forecast
These ratings describe a typical month, not a particular week. A warm spell in a “poor” month can give you a good day, and a wet week can spoil a “good” one. Use this page to plan the season, then check the 7-day forecast for your ZIP code before you buy materials or book help. Each project forecast checks the hours after you finish too: overnight lows, dew and rain that would ruin fresh stain, paint, sealer or concrete.
About this data
Monthly temperatures, rain days, snowfall and freeze dates are NOAA National Centers for Environmental Information (NCEI) U.S. Climate Normals for 1991–2020 at LAS VEGAS MCCARRAN AP, RENO TAHOE INTL AP. Ratings apply the same temperature limits as our forecasts (for example, 50°F or warmer for deck stain and driveway sealer, and no freezing nights for new concrete) to the average month. Your product label always takes priority.
Frequently asked questions
When is the best time to stain a deck in Nevada?
In Las Vegas, March–April and October. In Reno, June and September. Look for at least 24 dry hours before and after, and nights above about 40°F. The deck staining forecast checks your exact week.
When is the last frost in Nevada?
Las Vegas: around January 20; Reno: around April 20. These are median dates from NOAA 1991–2020 normals, so a freeze after them happens in about half of years. Low spots and valleys freeze later in spring.
Can you pour concrete in winter in Nevada?
Often, with care. Las Vegas averages about 9 freezing nights from December to February, so pick a mild spell, cover the slab on cold nights and keep it from freezing for the first 48 hours.
What months are best for sealing a driveway in Nevada?
In Las Vegas, April–May and September–October. In Reno, June–August. Most sealers need 50°F or warmer for 24 hours and a dry day after. See the driveway sealing forecast.