Notre Dame, Indiana Weather
Fireflies rise from the lawn. Day 77 of spring. Read this microseason across nine climate regions →
Notre Dame weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Overcast——86°54°—
- FridayJun 5Rain80%0.17″80°67°-6°
- SaturdayJun 6Light Showers80%—78°65°-2°
- SundayJun 7Overcast13%—84°65°+6°
- MondayJun 8Light Drizzle15%—82°66°-2°
- TuesdayJun 9Light Drizzle31%0.02″72°71°-10°
- WednesdayJun 10Light Drizzle22%—82°70°+10°
PM2.5 at 8.1 µg/m³ (AQI 45) with a 0.88 fine-to-coarse ratio and 6 mph wind — combustion smoke trapped in calm air, not road dust. AQI down 18 over the last 6 hours — air quality is improving sharply.
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 31. Overcast through the UV peak window (cloud cover ~68%) — afternoon ozone should stay flat.
- Present
- AQI 31
- UV peak
- 3.3 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 7
PM × Wind × Precip
PM2.5 at 8.1 µg/m³ (AQI 45) with a 0.88 fine-to-coarse ratio and 6 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.88
- 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
- 4:19 AM
- Moonset
- 1:40 PM
- In sign
- ♑︎ Capricorn
Fireflies rise from the lawn
Notre Dame at a glance
- Today vs. normal: 15°F below the seasonal normal for this latitude
- Last frost: April 26 (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 — Notre Dame
SPC has placed Notre Dame in the General Thunderstorms category for severe thunderstorms day after tomorrow.
- 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.
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
Notre Dame's warmest month is July (~73°F mean) and its coldest is January (~25°F). Rainfall peaks in May (4.3 inches) and bottoms out in February (2.3 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 25° | 2.7″ | 9 |
| February | 27° | 2.3″ | 8 |
| March | 37° | 2.4″ | 8 |
| April | 49° | 3.6″ | 12 |
| May | 60° | 4.3″ | 14 |
| June | 70° | 4.2″ | 14 |
| July | 73° | 4.1″ | 14 |
| August | 71° | 4.2″ | 14 |
| September | 65° | 3.7″ | 12 |
| October | 52° | 4.0″ | 13 |
| November | 40° | 2.9″ | 10 |
| December | 30° | 2.4″ | 8 |
Regional context
Notre Dame 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: Fort Wayne, IN, South Bend, IN, Elkhart, IN, Hammond, IN, Michigan City, IN.
Frequently asked
- When does it freeze in Notre Dame?
- Notre Dame's last spring frost typically falls around mid-April, and the first fall frost arrives around mid-November.
- What is the rainy season in Notre Dame?
- May is the wettest month with about 4.3 inches of rain on average; the city receives roughly 41 inches annually.
- What is the warmest month in Notre Dame?
- July is typically warmest, averaging about 73°F.
- What is the coldest month in Notre Dame?
- January is typically coldest, averaging about 25°F.
- When can I start a vegetable garden in Notre Dame?
- Cool-season crops (peas, lettuce) can be sown around the last spring frost (mid-April); warm-season crops (tomatoes, peppers) wait until 1–2 weeks after.
- How many rainy days does Notre Dame get?
- Notre Dame averages about 136 rainy days per year.
- What hardiness zone is Notre Dame?
- Notre Dame'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
Notre Dame, Indiana sits in a warm-summer humid continental climate zone. January means hover near 25°F while July averages 73°F — a 49°F seasonal swing.
Across the year, Notre Dame receives about 41 inches of precipitation spread over roughly 136 rainy days.
The rhythm of the year is set by latitude (41.7°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.