Middleton, Wisconsin Weather
Fireflies rise from the lawn. Day 77 of spring. Read this microseason across nine climate regions →
Middleton weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Overcast——86°56°—
- FridayJun 5Heavy Rain64%0.85″76°67°-10°
- SaturdayJun 6Light Drizzle50%0.04″83°62°+7°
- SundayJun 7Overcast——78°62°-5°
- MondayJun 8Light Showers51%—78°60°0°
- TuesdayJun 9Drizzle40%0.01″79°68°+1°
- WednesdayJun 10Heavy Drizzle29%—85°68°+6°
PM2.5 at 6.4 µg/m³ (AQI 36) with a 0.89 fine-to-coarse ratio and 4 mph wind — combustion smoke trapped in calm air, not road dust. AQI down 7 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 34 now. With UV 3.3 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 11 by mid-afternoon.
- Present
- AQI 34
- UV peak
- 3.3 at 1 PM
- Sky at peak
- partly cloudy
- Projected peak
- AQI 11
PM × Wind × Precip
PM2.5 at 6.4 µg/m³ (AQI 36) with a 0.89 fine-to-coarse ratio and 4 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.89
- 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).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 4:38 AM
- Moonset
- 1:50 PM
- In sign
- ♑︎ Capricorn
Fireflies rise from the lawn
Middleton at a glance
- Today vs. normal: 16°F below the seasonal normal for this latitude
- Last frost: May 5 (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 — Middleton
SPC has placed Middleton in the Marginal Risk category for severe thunderstorms tomorrow.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWMRGLMarginal Risk
- DAY 3NONENo severe 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
Middleton's warmest month is July (~72°F mean) and its coldest is January (~19°F). Rainfall peaks in June (5.7 inches) and bottoms out in January (1.7 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 19° | 1.7″ | 4 |
| February | 23° | 1.7″ | 5 |
| March | 34° | 2.3″ | 5 |
| April | 47° | 4.2″ | 8 |
| May | 58° | 4.5″ | 9 |
| June | 68° | 5.7″ | 8 |
| July | 72° | 4.7″ | 7 |
| August | 70° | 4.1″ | 6 |
| September | 62° | 3.9″ | 6 |
| October | 50° | 3.0″ | 6 |
| November | 37° | 2.3″ | 5 |
| December | 25° | 1.9″ | 5 |
Regional context
Middleton sits within a warm-summer humid continental climate region — a cohort that shares similar temperature ranges, seasonal patterns, and growing conditions across nearby cities.
Similar climates: Milwaukee, WI, Madison, WI, Appleton, WI, Green Bay, WI, Racine, WI.
Frequently asked
- When does it freeze in Middleton?
- Middleton's last spring frost typically falls around mid-May, and the first fall frost arrives around mid-October.
- What is the rainy season in Middleton?
- June is the wettest month with about 5.7 inches of rain on average; the city receives roughly 40 inches annually.
- What is the warmest month in Middleton?
- July is typically warmest, averaging about 72°F.
- What is the coldest month in Middleton?
- January is typically coldest, averaging about 19°F.
- When can I start a vegetable garden in Middleton?
- 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 Middleton get?
- Middleton averages about 73 rainy days per year.
- What hardiness zone is Middleton?
- Middleton'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
Middleton, Wisconsin sits in a warm-summer humid continental climate zone. January means hover near 19°F while July averages 72°F — a 52°F seasonal swing.
Across the year, Middleton receives about 40 inches of precipitation spread over roughly 73 rainy days.
The rhythm of the year is set by latitude (43.1°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.