Franklin, Wisconsin Weather
Solstice approaches — longest light. Day 88 of spring. Read this microseason across nine climate regions →
Franklin weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 15Overcast——76°50°—
- TuesdayJun 16Light Drizzle37%0.02″73°58°-3°
- WednesdayJun 17Heavy Showers98%1.4″64°52°-9°
- ThursdayJun 18Drizzle73%0.07″66°53°+2°
- FridayJun 19Light Drizzle11%—65°47°-1°
- SaturdayJun 20Light Drizzle15%—70°50°+5°
- SundayJun 21Overcast32%—68°54°-2°
AQI 26 (Good), driven by Ozone. AQI flat over the last 6 hours (within ±3 points). Ozone at AQI 34 now. With UV 6.6 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 21 around 1 PM.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion during the projected peak around 9 PM.
What's driving it
Ozone × UV × Sky
Ozone at AQI 34 now. With UV 6.6 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 21 around 1 PM.
- Present
- AQI 34
- UV peak
- 6.6 at 1 PM
- Sky at peak
- partly cloudy
- Projected peak
- AQI 21
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
- 5:11 AM
- Moonset
- 8:52 PM
- In sign
- ♋︎ Cancer
Solstice approaches — longest light
Franklin at a glance
- Today vs. normal: 6°F below the seasonal normal for this latitude
- Last frost: May 3 (climatological average for this latitude)
- Microseason: Jun 11–15
- Planting window: Stake and prune tomato suckers. Watch for squash vine borers.
16-Day Forecast — Franklin
- Mon76°50°1%
- Tue73°58°37%
- Wed64°52°98%
- Thu66°53°73%
- Fri65°47°11%
- Sat70°50°15%
- Sun68°54°32%
- Mon65°53°32%
- Tue68°51°14%
- Wed74°52°19%
- Thu77°57°18%
- Fri84°67°26%
- Sat86°71°32%
- Sun87°74°26%
- Mon79°64°37%
- Tue82°65°43%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of June 15, 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 — Franklin
SPC has placed Franklin 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.
Microseason · June 11–15
Solstice approaches — longest light
Sunrise before 5:30 AM; sunset nearly 8:30 PM.
Day 166 of 365 · Wedge 33 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
In Franklin, August runs warmest near 73°F and January coldest around 23°F, while May is the wettest month (3.7 inches) and January the driest (1.8 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 23° | 1.8″ | 18 |
| February | 24° | 1.8″ | 14 |
| March | 32° | 2.6″ | 16 |
| April | 43° | 3.2″ | 17 |
| May | 52° | 3.7″ | 18 |
| June | 64° | 3.5″ | 17 |
| July | 73° | 2.6″ | 15 |
| August | 73° | 2.7″ | 14 |
| September | 67° | 3.1″ | 14 |
| October | 55° | 2.9″ | 15 |
| November | 40° | 3.1″ | 15 |
| December | 28° | 2.2″ | 16 |
Regional context
Drawing on NOAA NCEI 1991-2020 normals, Franklin's January averages 23°F and July 73°F — 50°F apart — while precipitation totals roughly 33.1 inches over some 189 days.
Franklin's precipitation spreads evenly: May peaks at 3.7 inches on 18.0 wet days, while January holds 1.8 inches over 17.8 — no month dominates Franklin's rain calendar. It is a balanced pattern Franklin shares with places like Greendale, WI, Hales Corners, WI and Greenfield, WI.
Franklin's growing window opens around late-May, once Franklin's overnight lows stop freezing — sow kale, peas, spinach, and parsnips. Hold Franklin's tender crops — tomatoes, peppers, basil — until 10-14 days past Franklin's last frost. Around early-October, freezing nights resume in Franklin and tender crops must come in. In Franklin, low spots run 4-7°F colder than nearby slopes, nudging Franklin's frost dates a week.
Similar climates: Greendale, WI, Hales Corners, WI, Greenfield, WI, Oak Creek, WI, Raymond, WI.
Frequently asked
- When does it freeze in Franklin?
- Franklin's last spring frost lands near mid-May, and in Franklin the first fall frost follows around mid-October.
- What is the rainy season in Franklin?
- May is the wettest month in Franklin, about 3.7 inches on average; the year totals roughly 33 inches.
- What is the warmest month in Franklin?
- Franklin peaks in August, when the mean runs near 73°F.
- What is the coldest month in Franklin?
- January is Franklin's coldest month, averaging about 23°F.
- When can I start a vegetable garden in Franklin?
- Around mid-May, start frost-hardy crops in Franklin; tomatoes and basil belong a fortnight later.
- How many rainy days does Franklin get?
- Franklin records around 189 days of measurable precipitation annually.
- What hardiness zone is Franklin?
- Since January in Franklin averages 23°F, Franklin's USDA zone follows that floor — confirm it by ZIP.
- What is the 10-day forecast for Franklin?
- Franklin'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 Franklin?
- See this week's day-by-day rain chances for Franklin in the daily forecast above, and the next 24 hours in the hourly chart.
- What is the weather like right now in Franklin?
- Current conditions for Franklin and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
- How often is the Franklin forecast updated?
- The Franklin forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
- When are sunrise and sunset in Franklin?
- Day length in Franklin peaks around the June solstice — earliest sunrise and latest sunset — and is shortest near the December solstice.
- How accurate is the weather forecast for Franklin?
- The next few days in Franklin's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.
Climate
Set in a warm-summer humid continental zone, Franklin, Wisconsin swings from 23°F in the heart of winter to 73°F at midsummer — a 50°F arc.
Across the year, Franklin collects about 33 inches of precipitation over roughly 189 days with measurable rain or snow.
Franklin's 50°F range, set by its 42.9°N position, drives frost timing and what thrives in Franklin.
ZIP codes in Franklin
- 53132