West Haven, Utah Weather
Thunderheads build by noon. Day 89 of spring. Read this microseason across nine climate regions →
West Haven weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 15Overcast——85°53°—
- TuesdayJun 16Overcast——89°58°+4°
- WednesdayJun 17Clear——89°62°0°
- ThursdayJun 18Overcast——83°58°-6°
- FridayJun 19Overcast——95°61°+12°
- SaturdayJun 20Light Drizzle——83°59°-12°
- SundayJun 21Overcast——84°54°+1°
AQI 80 (Moderate), driven by Ozone. AQI up 45 in the last 6 hours — air quality is degrading. Ozone at AQI 68. Overcast through the UV peak window (cloud cover ~100%) — afternoon ozone should stay flat.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
Ozone × UV × Sky
Ozone at AQI 68. Overcast through the UV peak window (cloud cover ~100%) — afternoon ozone should stay flat.
- Present
- AQI 68
- UV peak
- 0.6 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 8
PM × Wind × Precip
PM2.5 at 6.4 µg/m³ (AQI 36) with a 0.63 fine-to-coarse ratio and 2 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.63
- 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).








































Cut your thistles before St. John, you will have two instead of one.
- Moonrise
- 7:11 AM
- Moonset
- 10:24 PM
- In sign
- ♋︎ Cancer
Thunderheads build by noon
West Haven at a glance
- Today vs. normal: 10°F above the seasonal normal for this latitude
- Last frost: April 23 (climatological average for this latitude)
- Microseason: Jun 16–20
- Planting window: Stake and prune tomato suckers. Watch for squash vine borers.
16-Day Forecast — West Haven
- Mon85°53°0%
- Tue89°58°1%
- Wed89°62°0%
- Thu83°58°0%
- Fri95°61°5%
- Sat83°59°9%
- Sun84°54°5%
- Mon90°56°2%
- Tue94°59°1%
- Wed98°63°0%
- Thu97°58°1%
- Fri96°64°0%
- Sat91°61°0%
- Sun91°60°3%
- Mon97°62°3%
- Tue104°69°6%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Warm-season window is open
As of June 16, 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.
Microseason · June 16–20
Thunderheads build by noon
Afternoon monsoon patterns establish; thunderstorms reliably build over peaks, bringing lightning and cool downdrafts.
Day 167 of 365 · Wedge 34 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?
- Day length in West Haven peaks around the June solstice — earliest sunrise and latest sunset — and is shortest near the December 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