Springfield, Illinois Weather
Cicadas claim the scorching afternoon. Day 15 of summer. Read this microseason across nine climate regions →
Springfield weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Foggy——88°70°—
- MondayJul 6Overcast——86°69°-2°
- TuesdayJul 7Overcast——81°65°-5°
- WednesdayJul 8Partly Cloudy——84°64°+3°
- ThursdayJul 9Thunderstorm41%0.62″87°70°+3°
- FridayJul 10T-storm w/ Hail41%0.04″81°70°-6°
- SaturdayJul 11Drizzle21%0.04″83°69°+2°
AQI 30 (Good), driven by Ozone. AQI up 5 over the last 6 hours (gradual rise). Ozone at AQI 31 now. With UV 4.0 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 12 around 1 PM.
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 now. With UV 4.0 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 12 around 1 PM.
- Present
- AQI 31
- UV peak
- 4.0 at 1 PM
- Sky at peak
- partly cloudy
- Projected peak
- AQI 12
PM × Wind × Precip
PM2.5 at 4.6 µg/m³ (AQI 26) with a 0.85 fine-to-coarse ratio and 6 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.85
- 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).








































If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 11:16 PM
- Moonset
- 11:11 AM
- In sign
- ♓︎ Pisces
Cicadas claim the scorching afternoon
Springfield at a glance
- Today vs. normal: 3°F above the seasonal normal for this latitude
- Last frost: April 15 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP codes: 62701, 62702, 62703, 62704, 62706, 62707, 62711, 62712
16-Day Forecast — Springfield
- Sun88°70°6%
- Mon86°69°6%
- Tue81°65°6%
- Wed84°64°6%
- Thu87°70°41%
- Fri81°70°41%
- Sat83°69°21%
- Sun86°69°9%
- Mon89°70°7%
- Tue92°75°9%
- Wed81°63°7%
- Thu78°55°26%
- Fri82°62°25%
- Sat87°66°35%
- Sun87°73°42%
- Mon89°72°29%
Forecast data from Open-Meteo (CC BY 4.0).
Live wind & temperature near Springfield
Right now in the garden
Peak growing season
As of July 5, 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 — Springfield
SPC includes Springfield in the general thunderstorm area today — no severe risk, but storms are possible.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWNONENo severe risk
- 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. Outlooks are re-issued multiple times per day; this page reflects the most recent SPC polygons covering the city’s coordinates.
Microseason · July 1–5
Cicadas claim the scorching afternoon
Dog-day cicadas emerge in waves, their rasp dominating every sunny hour; heat peaks above 90 degrees daily.
Day 186 of 365 · Wedge 37 of 72
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
Springfield's warmest month is July (~78°F mean) and its coldest is January (~27°F). Rainfall peaks in May (4.5 inches) and bottoms out in January (1.9 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 27° | 1.9″ | 14 |
| February | 31° | 2.1″ | 12 |
| March | 42° | 3.4″ | 16 |
| April | 54° | 4.1″ | 16 |
| May | 64° | 4.5″ | 17 |
| June | 73° | 4.3″ | 15 |
| July | 78° | 2.9″ | 14 |
| August | 78° | 2.5″ | 13 |
| September | 71° | 2.9″ | 12 |
| October | 58° | 3.0″ | 11 |
| November | 43° | 3.4″ | 12 |
| December | 31° | 2.7″ | 13 |
Regional context
By the nearest station's NOAA NCEI 1991-2020 normals, Springfield sees 27°F Januarys and 78°F Julys, a 51°F range, plus around 37.7 inches of precipitation across 165 days.
Rainfall in Springfield stays even across the calendar: May tops out at 4.5 inches over 17.0 rainy days, and January still logs 1.9 inches across 13.7 — a narrow range for Springfield. That lines Springfield up with places like Southern View, IL, Jerome, IL and Leland Grove, IL, fed by overlapping storm tracks.
The cool-season window in Springfield starts at mid-April, when nights stop freezing — think kale, peas, spinach, and parsnips. Hold Springfield's tender crops — tomatoes, peppers, basil — until 10-14 days past Springfield's last frost. Springfield's window closes around mid-November as overnight lows return below freezing. Within Springfield, cold-air pooling chills low spots by 5-10°F, shifting Springfield's local frost dates.
Similar climates: Southern View, IL, Jerome, IL, Leland Grove, IL, Grandview, IL, Rochester, IL.
Naturalist notes
Late May brings the distinctive calls of red-winged blackbirds defending territory in Springfield's wetlands and marshy areas.
By early June, native prairie grasses like big bluestem begin their rapid growth phase across central Illinois grasslands.
Frequently asked
- When does it freeze in Springfield?
- In Springfield, expect the last spring frost near mid-April; Springfield's first autumn frost comes around mid-November.
- What is the rainy season in Springfield?
- Springfield sees its heaviest rain in May (around 4.5 inches), part of roughly 38 inches a year.
- What is the warmest month in Springfield?
- The warmest stretch in Springfield comes in July, around 78°F on average.
- What is the coldest month in Springfield?
- On average January is the chilliest month in Springfield, about 27°F.
- When can I start a vegetable garden in Springfield?
- Springfield's last frost (mid-April) cues hardy greens; in Springfield, hold heat-lovers two weeks past.
- How many rainy days does Springfield get?
- Springfield records around 165 days of measurable precipitation annually.
- What hardiness zone is Springfield?
- Springfield sits in the USDA zone set by January lows near 27°F; the USDA ZIP tool gives the band.
- What is the 10-day forecast for Springfield?
- Springfield'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 Springfield?
- See this week's day-by-day rain chances for Springfield in the daily forecast above, and the next 24 hours in the hourly chart.
- What is the weather like right now in Springfield?
- Current conditions for Springfield and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
- How often is the Springfield forecast updated?
- The Springfield forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
- When are sunrise and sunset in Springfield?
- Today's sunrise and sunset times for Springfield 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 Springfield?
- The next few days in Springfield's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.
Climate
Springfield's humid subtropical climate in Illinois pairs 27°F Januarys with 78°F Julys, 51°F apart across the seasons.
Yearly precipitation in Springfield totals around 38 inches, spread over about 165 days of rain or snow.
Latitude 39.8°N gives Springfield its 51°F swing, and with it the rhythm of Springfield's growing season.
ZIP codes in Springfield
- 62711
- 62712
- 62629
- 62702
- 62703
- 62701
- 62706
- 62707
- 62704
- 62705
- 62715
- 62716
- 62719
- 62722
- 62726
- 62736
- 62739
- 62756
- 62757
- 62761
- 62762
- 62763
- 62765
- 62766
- 62767
- 62769
- 62776
- 62777
- 62781
- 62786
- 62796