Saukville, Wisconsin Weather
Fireflies rise from the lawn. Day 77 of spring. Read this microseason across nine climate regions →
Saukville weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Overcast——83°53°—
- FridayJun 5Rain84%0.17″78°67°-5°
- SaturdayJun 6Showers51%0.03″79°63°+1°
- SundayJun 7Foggy——67°52°-12°
- MondayJun 8Foggy20%—71°55°+4°
- TuesdayJun 9Light Drizzle24%—71°59°0°
- WednesdayJun 10Drizzle20%0.14″69°61°-2°
PM2.5 at 11.1 µg/m³ (AQI 55) with a 0.92 fine-to-coarse ratio and 6 mph wind — combustion smoke trapped in calm air, not road dust. AQI down 5 over the last 6 hours (steady decline since this morning).
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 40 now. With UV 3.3 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 13 by mid-afternoon.
- Present
- AQI 40
- UV peak
- 3.3 at 1 PM
- Sky at peak
- partly cloudy
- Projected peak
- AQI 13
PM × Wind × Precip
PM2.5 at 11.1 µg/m³ (AQI 55) with a 0.92 fine-to-coarse ratio and 6 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.92
- Wind
- light
- 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).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 4:33 AM
- Moonset
- 1:42 PM
- In sign
- ♑︎ Capricorn
Fireflies rise from the lawn
Saukville at a glance
- Today vs. normal: 15°F below the seasonal normal for this latitude
- Last frost: May 6 (climatological average for this latitude)
- Microseason: Jun 1–5
- Planting window: Harvest spring lettuce before it bolts. Sow heat-tolerant greens.
Right now in the garden
Peak growing season
As of June 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 — Saukville
SPC has placed Saukville in the Marginal Risk category for severe thunderstorms tomorrow.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWMRGLMarginal Risk
- DAY 3MRGLMarginal Risk
Isolated severe storms possible. Limited threat for hail or damaging wind.
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.
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
Saukville's warmest month is July (~69°F mean) and its coldest is January (~19°F). Rainfall peaks in June (4.3 inches) and bottoms out in January (1.5 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 19° | 1.5″ | 5 |
| February | 22° | 1.7″ | 4 |
| March | 32° | 2.1″ | 5 |
| April | 42° | 3.9″ | 8 |
| May | 54° | 3.8″ | 9 |
| June | 64° | 4.3″ | 8 |
| July | 69° | 3.3″ | 7 |
| August | 67° | 4.0″ | 6 |
| September | 60° | 3.3″ | 7 |
| October | 49° | 2.8″ | 7 |
| November | 36° | 2.1″ | 5 |
| December | 26° | 2.2″ | 5 |
Regional context
Saukville's climate, per the NOAA NCEI 1991-2020 normals from the nearest reporting station, runs cold-winter and warm-summer. January means hover near 19°F while July climbs to 69°F — a 49°F seasonal swing typical of northern-tier latitudes. Annual precipitation totals about 34.9 inches spread across roughly 75 days with measurable rain or snow.
Precipitation runs summer-dominant here: June averages 4.3 inches across 7.5 days with measurable rain, driven mostly by warm-season storms and thunderstorm activity, while January drops to just 1.5 inches across 4.5 rainy days under drier cool-season air. That wet-warm-summer pattern groups Saukville with places like Port Washington, WI, Grafton, WI and Fredonia, WI — a regional cohort where summer thunderstorm season carries more than half the annual moisture.
The frost-sensitive growing window opens around late-May, when overnight lows reliably clear freezing for cool-season crops like kale, peas, spinach, and parsnips. Warm-season transplants — tomatoes, peppers, and basil — typically wait two weeks past that date to avoid late spring cold snaps. The window closes around early-October, when overnight lows resume dipping below freezing and frost-tender plants need protection or harvest. The dates above are 1991-2020 normals; in a given year either bookend can move 1-2 weeks either direction. Within Saukville, low-lying parcels along drainage features typically lose 4-7°F of overnight low temperature versus the bench positions on calm clear nights, which shifts the working last-frost date by a week or more.
Similar climates: Port Washington, WI, Grafton, WI, Fredonia, WI, Newburg, WI, Cedarburg, WI.
Frequently asked
- When does it freeze in Saukville?
- Saukville's last spring frost typically falls around mid-May, and the first fall frost arrives around mid-October.
- What is the rainy season in Saukville?
- June is the wettest month with about 4.3 inches of rain on average; the city receives roughly 35 inches annually.
- What is the warmest month in Saukville?
- July is typically warmest, averaging about 69°F.
- What is the coldest month in Saukville?
- January is typically coldest, averaging about 19°F.
- When can I start a vegetable garden in Saukville?
- Cool-season crops (peas, lettuce) can be sown around the last spring frost (mid-May); warm-season crops (tomatoes, peppers) wait until 1–2 weeks after.
- How many rainy days does Saukville get?
- Saukville averages about 75 rainy days per year.
- What hardiness zone is Saukville?
- Saukville'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
Saukville, Wisconsin sits in a warm-summer humid continental climate zone. January means hover near 19°F while July averages 69°F — a 49°F seasonal swing.
Across the year, Saukville receives about 35 inches of precipitation spread over roughly 75 rainy days.
The rhythm of the year is set by latitude (43.4°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.