Lafayette, Indiana Weather
Thunder quiets the land. Day 93 of summer. Read this microseason across nine climate regions →
Lafayette weather forecast — hour by hour, 7-day outlook, NOAA radar
Conditions updated 10:22 AM EDT · Open-Meteo
- TodaySep 21Overcast32%—67°60°—
- TuesdaySep 22Overcast—0.02″63°56°-4°
- WednesdaySep 23Overcast——62°57°-1°
- ThursdaySep 24Overcast——68°57°+6°
- FridaySep 25Overcast——68°55°0°
- SaturdaySep 26Overcast——59°57°-9°
- SundaySep 27Drizzle—0.05″72°58°+13°
Air quality now AQI 26 · Good
AQI 26 (Good), driven by Ozone. AQI flat over the last 6 hours (within ±3 points).
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
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).
September dries up ditches or breaks down bridges.
- Moonrise
- 5:21 PM
- Moonset
- 2:07 AM
- In sign
- ♑︎ Capricorn
Thunder quiets the land
Read this microseason across nine climate regions →
All 72 microseasons on the year wheel →
Lafayette at a glance
- Today vs. normal: Today averages 64°F (high 67°F, low 60°F), about the 63°F normal for Sep 21
- Last frost: April 26 (1991–2020 median, NOAA station 7 km away)
- Microseason: Sep 21–25
- Planting calendar: September — plant garlic (overwinter); harvest tomatoes, peppers, beans, summer squash, winter squash
16-Day Forecast — Lafayette
- Mon67°60°32%
- Tue63°56°4%
- Wed62°57°2%
- Thu68°57°0%
- Fri68°55°0%
- Sat59°57°3%
- Sun72°58°6%
- Mon79°61°9%
- Tue76°66°21%
- Wed74°58°23%
- Thu74°55°10%
- Fri72°54°16%
- Sat82°61°26%
- Sun70°52°18%
- Mon58°44°13%
- Tue59°40°26%
Forecast data from Open-Meteo (CC BY 4.0).
Live wind & temperature near Lafayette
Interactive wind and temperature map centered on Lafayette — it loads in your browser. Open the full weather map.
Right now in the garden
Fall planting + final harvests
As of September 21, the season's first frost (typically October 18) is approaching. Pick what frost-tender plants still carry before the next cold front. This city's planting calendar for September: plant garlic (overwinter); harvest tomatoes, peppers, beans, summer squash, and winter squash.
Sun & seasons in Lafayette
Lafayette sits in Tippecanoe County, where the year’s longest day runs 15h 4m of daylight and its shortest just 9h 17m — a swing of +5h 47m between the June and December solstices. Clocks spring forward on Sunday, March 8, 2026 and fall back on Sunday, November 1, 2026.
Indianapolis, the state’s largest city, lies about 57 miles to the SE. The nearest town Lafayette tracks is Tipton, roughly 44 miles to the E.
Air quality in Lafayette
Air quality in Lafayette’s county has trended cleaner since 2020; its cleanest year on record was 2024 (median AQI 35). See the full air-quality history for Lafayette.
Planting calendar
| Month | Plant | Harvest |
|---|---|---|
| April | lettuce, peas, spinach, radishes | radishes |
| May | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash | lettuce, spinach, radishes |
| June | tomatoes, peppers, beans, squash | lettuce, peas, spinach, radishes |
| July | tomatoes, peppers, beans, squash | lettuce, peas, spinach, tomatoes, peppers, beans, summer squash, garlic |
| August | beans, squash, fall brassicas, carrots | tomatoes, peppers, beans, summer squash, winter squash, garlic |
| September | garlic (overwinter) | tomatoes, peppers, beans, summer squash, winter squash |
| October | — | tomatoes, peppers, beans, summer squash, winter squash, fall brassicas, carrots |
| November | — | fall brassicas, carrots |
A year in weather
The year in Lafayette tops out in July (~74°F) and dips lowest in January (~26°F), with June wettest at 4.6 inches and February driest at 1.8 inches.
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 26° | 2.2″ | 5 |
| February | 30° | 1.8″ | 4 |
| March | 40° | 2.7″ | 6 |
| April | 51° | 3.8″ | 7 |
| May | 62° | 4.0″ | 8 |
| June | 71° | 4.6″ | 8 |
| July | 74° | 4.1″ | 7 |
| August | 72° | 3.1″ | 6 |
| September | 66° | 2.6″ | 5 |
| October | 54° | 2.9″ | 6 |
| November | 41° | 2.9″ | 6 |
| December | 31° | 2.3″ | 5 |
Regional context
Similar climates West Lafayette, IN, Dayton, IN, Shadeland, IN
By the nearest station's NOAA NCEI 1991-2020 normals, Lafayette sees 26°F Januarys and 74°F Julys, a 48°F range, plus around 37 inches of precipitation across 72 days.
Summer convection drives Lafayette's precipitation: June logs 4.6 inches on 7.8 rainy days, against February's 1.8 inches on 4.3 — warm-season storms carry Lafayette's moisture. Lafayette shares that warm-season-wet pattern with places like West Lafayette, IN, Dayton, IN and Shadeland, IN.
The cool-season window in Lafayette starts at April 26, when nights stop freezing — think kale, peas, spinach, and parsnips. Warm-soil crops in Lafayette wait about two weeks past Lafayette's last frost, once the soil warms. Around October 18, freezing nights resume in Lafayette and tender crops must come in. Sheltered Lafayette yards can escape a light frost.
Similar climates: West Lafayette, IN, Dayton, IN, Shadeland, IN, Battle Ground, IN, Buck Creek, IN.
Frequently asked
- When does it freeze in Lafayette?
- In Lafayette, expect the last spring frost near April 26; Lafayette's first autumn frost comes around October 18.
- What is the rainy season in Lafayette?
- Rainfall in Lafayette peaks in June near 4.6 inches, out of about 37 inches annually.
- What is the warmest month in Lafayette?
- July is Lafayette's warmest month, averaging about 74°F.
- What is the coldest month in Lafayette?
- Lafayette bottoms out in January, with a mean near 26°F.
- When can I start a vegetable garden in Lafayette?
- Lafayette's last frost (April 26) cues hardy greens; in Lafayette, hold heat-lovers two weeks past.
- How many rainy days does Lafayette get?
- Expect roughly 72 wet days a year in Lafayette.
- What hardiness zone is Lafayette?
- Lafayette's USDA zone comes from its January mean (26°F); enter the ZIP on the USDA lookup for the number.
- What is the 10-day forecast for Lafayette?
- Lafayette'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 Lafayette?
- See this week's day-by-day rain chances for Lafayette in the daily forecast above, and the next 24 hours in the hourly chart.
- What is the weather like right now in Lafayette?
- Current conditions for Lafayette and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
- How often is the Lafayette forecast updated?
- The Lafayette forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
- When are sunrise and sunset in Lafayette?
- Today's sunrise and sunset times for Lafayette are in the Almanac section above, along with civil dawn, civil dusk, and day length. Day length is longest near the summer solstice and shortest near the winter solstice.
- How accurate is the weather forecast for Lafayette?
- The next few days in Lafayette's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.
Lafayette sits at 40.4°N; its climate zone is humid subtropical (Köppen approximation).
ZIP codes in Lafayette
- 47901
- 47902
- 47903
- 47904
- 47905
- 47909