Lewisville, Washington Weather
Thimbleberry Sweetens. Day 90 of spring. Read this microseason across nine climate regions →
Lewisville weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 17Overcast——72°49°—
- ThursdayJun 18Overcast——80°49°+8°
- FridayJun 19Overcast——85°54°+5°
- SaturdayJun 20Overcast——75°48°-10°
- SundayJun 21Clear——85°47°+10°
- MondayJun 22Overcast——96°56°+11°
- TuesdayJun 23Mostly Clear——91°56°-5°
AQI 21 (Good), driven by Ozone. AQI flat over the last 6 hours (within ±3 points).
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion during the projected peak around 10 PM.
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
- 7:55 AM
- Moonset
- 11:14 PM
- In sign
- ♌︎ Leo
Thimbleberry Sweetens
Lewisville at a glance
- Today vs. normal: 14°F below the seasonal normal for this latitude
- Last frost: May 21 (climatological average for this latitude)
- Microseason: Jun 16–20
- Planting window: Stake and prune tomato suckers. Watch for squash vine borers.
16-Day Forecast — Lewisville
- Wed71°49°0%
- Thu80°49°0%
- Fri85°54°0%
- Sat75°48°0%
- Sun85°47°0%
- Mon96°56°0%
- Tue91°56°0%
- Wed79°49°1%
- Thu74°44°0%
- Fri79°44°3%
- Sat85°51°2%
- Sun96°57°6%
- Mon97°61°3%
- Tue97°62°11%
- Wed89°53°5%
- Thu81°48°3%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of June 17, 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.
Microseason · June 16–20
Thimbleberry Sweetens
Thimbleberry flowers fade to reveal first ruby berries hidden in heart-shaped leaves. Salmonberry and red huckleberry ripen in wet draws.
Day 168 of 365 · Wedge 34 of 72
Planting calendar
| Month | Plant | Harvest |
|---|---|---|
| January | — | — |
| February | — | — |
| March | — | — |
| April | — | — |
| May | lettuce, peas, spinach, radishes | lettuce, peas, radishes |
| June | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| July | tomatoes, peppers, beans, squash | tomatoes, beans, summer squash |
| August | tomatoes, peppers, beans, squash, fall brassicas, garlic (overwinter), carrots | tomatoes, beans, summer squash |
| September | fall brassicas, garlic (overwinter), carrots | tomatoes, beans, summer squash |
| October | — | winter squash, tomatoes (last) |
| November | — | — |
| December | — | — |
A year in weather
Lewisville's warmest month is August (~68°F mean) and its coldest is January (~38°F). Rainfall peaks in November (11.1 inches) and bottoms out in July (0.5 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 38° | 10.8″ | 23 |
| February | 41° | 8.2″ | 20 |
| March | 44° | 8.7″ | 23 |
| April | 49° | 5.8″ | 21 |
| May | 56° | 4.0″ | 18 |
| June | 61° | 2.7″ | 15 |
| July | 67° | 0.5″ | 7 |
| August | 68° | 0.9″ | 7 |
| September | 62° | 3.2″ | 12 |
| October | 53° | 9.1″ | 18 |
| November | 44° | 11.1″ | 23 |
| December | 38° | 11.0″ | 23 |
Regional context
In Lewisville, NOAA NCEI 1991-2020 normals put January near 38°F and July near 67°F — a 29°F seasonal arc — with about 76.1 inches of precipitation over 210 rainy or snowy days.
Precipitation in Lewisville peaks in the cool season: November averages 11.1 inches across 22.6 storm-fed days, while July bottoms out at 0.5 inches over just 6.5 rainy days. It is a winter-storm rhythm Lewisville shares with places like Venersborg, WA, Battle Ground, WA and Cherry Grove, WA.
Around late-May, Lewisville sheds its freezing nights — peas, lettuce, spinach, and radishes go into Lewisville's beds. Heat-demanding starts go out a fortnight on in Lewisville, after the soil warms and cold snaps clear. By early-October, frost is back in Lewisville — protect or harvest anything tender. A creek-bottom lot in Lewisville can lag Lewisville's last frost 7-10 days behind a south slope.
Similar climates: Venersborg, WA, Battle Ground, WA, Cherry Grove, WA, Meadow Glade, WA, Hockinson, WA.
Frequently asked
- When does it freeze in Lewisville?
- Frost typically leaves Lewisville by mid-May and returns to Lewisville near mid-October.
- What is the rainy season in Lewisville?
- November is the wettest month in Lewisville, about 11.1 inches on average; the year totals roughly 76 inches.
- What is the warmest month in Lewisville?
- August is Lewisville's warmest month, averaging about 68°F.
- What is the coldest month in Lewisville?
- Lewisville bottoms out in January, with a mean near 38°F.
- When can I start a vegetable garden in Lewisville?
- Time tomatoes in Lewisville for two weeks after mid-May; peas and greens start at Lewisville's frost line.
- How many rainy days does Lewisville get?
- Lewisville averages about 210 days with measurable rain or snow each year.
- What hardiness zone is Lewisville?
- Lewisville's USDA zone comes from its January mean (38°F); enter the ZIP on the USDA lookup for the number.
- What is the 10-day forecast for Lewisville?
- Lewisville'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 Lewisville?
- See this week's day-by-day rain chances for Lewisville in the daily forecast above, and the next 24 hours in the hourly chart.
- What is the weather like right now in Lewisville?
- Current conditions for Lewisville and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
- How often is the Lewisville forecast updated?
- The Lewisville forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
- When are sunrise and sunset in Lewisville?
- Day length in Lewisville peaks around the June solstice — earliest sunrise and latest sunset — and is shortest near the December solstice.
- How accurate is the weather forecast for Lewisville?
- The next few days in Lewisville's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.
Climate
Lewisville, Washington has a warm-summer Mediterranean climate: January averages roughly 38°F, July about 67°F, 29°F between them.
Across the year, Lewisville collects about 76 inches of precipitation over roughly 210 days with measurable rain or snow.
Latitude 45.8°N gives Lewisville its 29°F swing, and with it the rhythm of Lewisville's growing season.
ZIP codes in Lewisville
- 98604