West Haven, Utah Weather
Monsoon storms drench the south. Day 14 of summer. Read this microseason across nine climate regions →
West Haven weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Clear——92°59°—
- SundayJul 5Overcast——97°65°+5°
- MondayJul 6Overcast——98°71°+1°
- TuesdayJul 7Overcast——96°67°-2°
- WednesdayJul 8Overcast——99°67°+3°
- ThursdayJul 9Mostly Clear——97°65°-2°
- FridayJul 10Clear——99°63°+2°
AQI 35 (Good), driven by PM2.5. AQI down 33 over the last 6 hours — air quality is improving sharply. PM2.5 at 9.7 µg/m³ (AQI 52) with a 0.77 fine-to-coarse ratio and 4 mph wind — combustion smoke trapped in calm air, not road dust.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
PM × Wind × Precip
PM2.5 at 9.7 µg/m³ (AQI 52) with a 0.77 fine-to-coarse ratio and 4 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.77
- Wind
- calm
- Recent rain
- 0h in last 6h
- Pattern
- stagnant smoke
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).








































If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 11:26 PM
- Moonset
- 10:37 AM
- In sign
- ♓︎ Pisces
Monsoon storms drench the south
West Haven at a glance
- Today vs. normal: 10°F below the seasonal normal for this latitude
- Last frost: April 23 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
15-Day Forecast — West Haven
- Sat93°61°0%
- Sun97°65°0%
- Mon98°71°5%
- Tue96°67°7%
- Wed99°67°3%
- Thu97°65°1%
- Fri99°63°0%
- Sat104°66°3%
- Sun101°71°3%
- Mon103°66°5%
- Tue107°71°8%
- Wed103°72°12%
- Thu102°71°22%
- Fri104°73°23%
- Sat104°71°9%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 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.
SPC Convective Outlook
Storm Prediction Center — West Haven
SPC includes West Haven in the general thunderstorm area day after tomorrow — no severe risk, but storms are possible.
- TODAYNONENo severe risk
- TOMORROWNONENo severe risk
- DAY 3TSTMGeneral Thunderstorms
Thunderstorms possible. Not severe, but capable of producing lightning and brief heavy rain.
Source: NOAA / NWS Storm Prediction Center categorical convective outlook. Outlooks are re-issued multiple times per day; this page reflects the most recent SPC polygons covering the city’s coordinates.
Microseason · July 1–5
Monsoon storms drench the south
Monsoon established in southern Mountain West (New Mexico, southern Utah, Arizona north); afternoon downpours and lightning common.
Day 185 of 365 · Wedge 37 of 72
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
West Haven peaks at about 79°F in July and bottoms near 26°F in December; March brings the heaviest rain (2.5 inches) and June the least (0.6 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 26° | 2.1″ | 16 |
| February | 30° | 2.0″ | 13 |
| March | 36° | 2.5″ | 16 |
| April | 45° | 2.4″ | 17 |
| May | 57° | 2.1″ | 14 |
| June | 68° | 0.6″ | 6 |
| July | 79° | 0.6″ | 5 |
| August | 77° | 0.7″ | 5 |
| September | 66° | 1.1″ | 6 |
| October | 51° | 1.5″ | 8 |
| November | 36° | 2.2″ | 14 |
| December | 26° | 2.4″ | 18 |
Regional context
By the nearest station's NOAA NCEI 1991-2020 normals, West Haven sees 26°F Januarys and 79°F Julys, a 53°F range, plus around 20.1 inches of precipitation across 139 days.
Precipitation in West Haven peaks in the cool season: March averages 2.5 inches across 16.1 storm-fed days, while June bottoms out at 0.6 inches over just 5.8 rainy days. That cool-season-wet pattern aligns West Haven with places like Roy, UT, Riverdale, UT and Marriott-Slaterville, UT.
By mid-April the frosts ease in West Haven, opening the season for kale, peas, spinach, and parsnips. Warm-soil crops in West Haven wait about two weeks past West Haven's last frost, once the soil warms. It shuts near mid-November, when freezes return to West Haven and tender plants need cover. In West Haven, low spots run 4-7°F colder than nearby slopes, nudging West Haven's frost dates a week.
Similar climates: Roy, UT, Riverdale, UT, Marriott-Slaterville, UT, Ogden, UT, Clinton, UT.
Frequently asked
- When does it freeze in West Haven?
- In West Haven, expect the last spring frost near mid-April; West Haven's first autumn frost comes around mid-November.
- What is the rainy season in West Haven?
- Rainfall in West Haven peaks in March near 2.5 inches, out of about 20 inches annually.
- What is the warmest month in West Haven?
- July is West Haven's warmest month, averaging about 79°F.
- What is the coldest month in West Haven?
- West Haven bottoms out in December, with a mean near 26°F.
- When can I start a vegetable garden in West Haven?
- Time tomatoes in West Haven for two weeks after mid-April; peas and greens start at West Haven's frost line.
- How many rainy days does West Haven get?
- Expect roughly 139 wet days a year in West Haven.
- What hardiness zone is West Haven?
- West Haven sits in the USDA zone set by December lows near 26°F; the USDA ZIP tool gives the band.
- What is the 10-day forecast for West Haven?
- West Haven'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 West Haven?
- See this week's day-by-day rain chances for West Haven in the daily forecast above, and the next 24 hours in the hourly chart.
- What is the weather like right now in West Haven?
- Current conditions for West Haven and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
- How often is the West Haven forecast updated?
- The West Haven forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
- When are sunrise and sunset in West Haven?
- Today's sunrise and sunset times for West Haven are in the Almanac section above, along with civil dawn, civil dusk, and day length. Day length is longest near the summer solstice and shortest near the winter solstice.
- How accurate is the weather forecast for West Haven?
- The next few days in West Haven's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.
Climate
West Haven, Utah has a cold semi-arid climate: January averages roughly 26°F, July about 79°F, 53°F between them.
West Haven sees close to 20 inches of precipitation annually, falling across some 139 wet days.
Latitude 41.2°N gives West Haven its 53°F swing, and with it the rhythm of West Haven's growing season.
ZIP codes in West Haven
- 84401
- 84402