Peoria, Illinois Weather
Thunder quiets the land. Day 93 of summer. Read this microseason across nine climate regions →
Peoria weather forecast — hour by hour, 7-day outlook, NOAA radar
Conditions updated 1:00 AM CDT · Open-Meteo
- TodaySep 21Overcast——62°59°—
- TuesdaySep 22Overcast11%0.02″64°54°+2°
- WednesdaySep 23Overcast——70°56°+6°
- ThursdaySep 24Overcast——73°54°+3°
- FridaySep 25Drizzle—0.04″71°59°-2°
- SaturdaySep 26Light Rain—0.41″58°52°-13°
- SundaySep 27Overcast——73°52°+15°
Air quality now AQI 32 · Good
AQI 32 (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
- 4:34 PM
- Moonset
- 1:16 AM
- In sign
- ♑︎ Capricorn
Thunder quiets the land
Read this microseason across nine climate regions →
All 72 microseasons on the year wheel →
Peoria at a glance
- Today vs. normal: Today averages 61°F (high 62°F, low 59°F), 4°F below the 65°F normal for Sep 21
- Last frost: April 16 (1991–2020 median, NOAA station 11 km away)
- Microseason: Sep 21–25
- Planting calendar: September — plant garlic (overwinter); harvest tomatoes, peppers, beans, summer squash, winter squash
15-Day Forecast — Peoria
- Mon62°59°5%
- Tue64°54°11%
- Wed70°56°0%
- Thu73°54°0%
- Fri71°59°0%
- Sat58°52°4%
- Sun73°52°9%
- Mon76°52°16%
- Tue72°57°26%
- Wed72°53°22%
- Thu74°48°17%
- Fri73°54°24%
- Sat69°58°23%
- Sun88°61°13%
- Mon83°56°16%
Forecast data from Open-Meteo (CC BY 4.0).
Live wind & temperature near Peoria
Interactive wind and temperature map centered on Peoria — 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 23) 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.
SPC Convective Outlook
Storm Prediction Center — Peoria
SPC includes Peoria in the general thunderstorm area tomorrow — no severe risk, but storms are possible.
- TODAYNONENo severe risk
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3NONENo severe risk
Thunderstorms possible. Not severe, but capable of producing lightning and brief heavy rain.
Source: NOAA / NWS Storm Prediction Center categorical convective outlook.
Sun & seasons in Peoria
Peoria sits in Peoria County, where the year’s longest day runs 15h 6m of daylight and its shortest just 9h 15m — a swing of +5h 51m between the June and December solstices. Clocks spring forward on Sunday, March 8, 2026 and fall back on Sunday, November 1, 2026.
Chicago, the state’s largest city, lies about 125 miles to the NE. The nearest town Peoria tracks is Bloomington, roughly 39 miles to the ESE.
Air quality in Peoria
Air quality in Peoria’s county has held roughly steady since 2020; its cleanest year on record was 2020 (median AQI 44). See the full air-quality history for Peoria.
Planting calendar
| Month | Plant | Harvest |
|---|---|---|
| March | lettuce, peas, spinach, radishes | — |
| April | lettuce, peas, spinach, radishes | radishes |
| May | tomatoes, peppers, beans, squash | lettuce, peas, spinach, radishes |
| June | tomatoes, peppers, beans, squash | lettuce, peas, spinach, radishes |
| July | tomatoes, peppers, beans, squash | tomatoes, peppers, beans, summer squash, garlic |
| August | beans, squash, fall brassicas, carrots | tomatoes, peppers, beans, summer squash, winter squash |
| September | garlic (overwinter) | tomatoes, peppers, beans, summer squash, winter squash |
| October | garlic (overwinter) | tomatoes, peppers, beans, summer squash, winter squash, fall brassicas, carrots |
| November | — | fall brassicas, carrots |
A year in weather
Peoria's warmest month is July (~76°F mean) and its coldest is January (~26°F). Rainfall peaks in May (4.7 inches) and bottoms out in February (2.0 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 26° | 2.1″ | 5 |
| February | 30° | 2.0″ | 5 |
| March | 41° | 2.7″ | 6 |
| April | 53° | 4.0″ | 8 |
| May | 64° | 4.7″ | 8 |
| June | 73° | 3.7″ | 7 |
| July | 76° | 3.5″ | 5 |
| August | 75° | 3.3″ | 6 |
| September | 67° | 3.5″ | 5 |
| October | 55° | 3.2″ | 6 |
| November | 42° | 2.7″ | 6 |
| December | 31° | 2.2″ | 5 |
Regional context
Similar climates Peoria Heights, IL, West Peoria, IL, Mossville, IL
Peoria swings from 26°F in January to 76°F in July (51°F) per NOAA NCEI 1991-2020 normals; precipitation in Peoria runs about 37.6 inches on roughly 71 measurable days.
Precipitation in Peoria runs summer-dominant: May averages 4.7 inches across 8.4 days of warm-season storms, while February drops to 2.0 inches over 4.6 rainy days of drier cool air. That puts Peoria in a summer-convective cohort with places like Peoria Heights, IL, West Peoria, IL and Mossville, IL.
Around April 16, Peoria sheds its freezing nights — kale, peas, spinach, and parsnips go into Peoria's beds. Tomatoes and peppers do best set out two weeks later in Peoria, once nights clear the mid-40s°F. The season ends by October 23 in Peoria, once hard frosts set back in. Open lawns in Peoria whiten first when frost returns.
Similar climates: Peoria Heights, IL, West Peoria, IL, Mossville, IL, Norwood, IL, Bellevue, IL.
Frequently asked
- When does it freeze in Peoria?
- In Peoria, expect the last spring frost near April 16; Peoria's first autumn frost comes around October 23.
- What is the rainy season in Peoria?
- Rainfall in Peoria peaks in May near 4.7 inches, out of about 38 inches annually.
- What is the warmest month in Peoria?
- Peoria peaks in July, when the mean runs near 76°F.
- What is the coldest month in Peoria?
- January is Peoria's coldest month, averaging about 26°F.
- When can I start a vegetable garden in Peoria?
- Around April 16, start frost-hardy crops in Peoria; tomatoes and basil belong a fortnight later.
- How many rainy days does Peoria get?
- Peoria averages about 71 days with measurable rain or snow each year.
- What hardiness zone is Peoria?
- With January around 26°F, Peoria's zone reflects that minimum — the USDA ZIP map confirms Peoria's band.
- What is the 10-day forecast for Peoria?
- Peoria'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 Peoria?
- See this week's day-by-day rain chances for Peoria in the daily forecast above, and the next 24 hours in the hourly chart.
- What is the weather like right now in Peoria?
- Current conditions for Peoria and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
- How often is the Peoria forecast updated?
- The Peoria forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
- When are sunrise and sunset in Peoria?
- Today's sunrise and sunset times for Peoria 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 Peoria?
- The next few days in Peoria's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.
Peoria sits at 40.8°N; its climate zone is humid subtropical (Köppen approximation).
ZIP codes in Peoria
- 61601
- 61602
- 61603
- 61604
- 61605
- 61606
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- 61614
- 61615
- 61625
- 61629
- 61630
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