Normal, Illinois Weather
Normal weather this week
Over the next 7 days in Normal, daytime highs range from 8°C to 18°C and night-time lows from -4°C to 7°C. The warmest afternoon is likely on Friday at 18°C, while the coolest night is expected tonight at -4°C. Temperatures trend warmer through the week, rising by about 7°C. Expect a wide gap of around 12°C between afternoon and early-morning temperatures, so mornings will feel noticeably cooler.
No significant rain is expected in Normal this week. The highest rain chance is just 6%, on Thursday.
It turns breezy on Wednesday, with winds reaching about 32 km/h — secure loose objects on rooftops and balconies. UV levels stay moderate or lower, peaking at 3. Average humidity is a comfortable 60% or so.
| Day | Conditions | High / Low | Rain chance | Rain | Max wind |
|---|---|---|---|---|---|
| Today (Saturday) | Partly cloudy | 8° / -4° | 0% | 0.0 mm | 14 km/h |
| Tomorrow (Sunday) | Overcast | 10° / -4° | 0% | 0.0 mm | 9 km/h |
| Monday | Overcast | 11° / -2° | 0% | 0.0 mm | 16 km/h |
| Tuesday | Partly cloudy | 13° / 3° | 0% | 0.0 mm | 17 km/h |
| Wednesday | Overcast | 15° / 4° | 0% | 0.0 mm | 32 km/h |
| Thursday | Overcast | 17° / 7° | 6% | 0.0 mm | 30 km/h |
| Friday | Overcast | 18° / 7° | 5% | 0.0 mm | 20 km/h |
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Today's outlook for Normal
At 23:00 local time it is -1°C in Normal under clear skies, feeling like -4°C. Today's forecast high is 8°C and the low is -4°C, and the day overall looks partly cloudy. Rain is unlikely today (0% chance). Winds are blowing at about 7 km/h from the north-west. Humidity is 81%.
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Climate of Normal: monthly averages
Based on 25 years of satellite and reanalysis data (2001-2025), July is usually the hottest month in Normal, with average daytime highs around 29°C. January is the coolest, when nights typically fall to about -8°C and frost is possible on the coldest nights. That is a wide yearly range of roughly 37°C, so the seasons feel very different from each other.
The area receives about 1000 mm of rain in a typical year. Most of it falls from May to July, and June is the wettest month at roughly 118 mm.
For outdoor plans and travel, August to September usually offer the most comfortable weather in Normal, with mild days and relatively little rain.
| Month | Avg high | Avg low | Rainfall | Humidity |
|---|---|---|---|---|
| Jan | 0° | -8° | 55 mm | 85% |
| Feb | 3° | -7° | 53 mm | 83% |
| Mar | 10° | -1° | 69 mm | 79% |
| Apr | 17° | 5° | 99 mm | 75% |
| May | 23° | 11° | 115 mm | 77% |
| Jun | 27° | 17° | 118 mm | 77% |
| Jul | 29° | 19° | 101 mm | 76% |
| Aug | 29° | 18° | 91 mm | 73% |
| Sep | 25° | 13° | 85 mm | 72% |
| Oct | 18° | 6° | 87 mm | 73% |
| Nov | 10° | 0° | 66 mm | 78% |
| Dec | 3° | -5° | 62 mm | 85% |
Source: NASA POWER (MERRA-2 reanalysis), averaged over the roughly 50 km grid area around Normal. Values describe typical conditions, not a forecast.
About Normal weather
Normal is one of many towns in Illinois's humid continental climate, shaped by its Great Lakes and prairie geography, about 99 km north-east of Springfield. Before the rains arrive, there's warm, humid summers (June–August). Cooler months mean cold winters (December–February) with regular snow, colder near Lake Michigan. This page shows live, auto-refreshing weather for Normal: current conditions, an hourly breakdown, a 16-day outlook, a date-lookup tool for any past or future date, and real-time air quality, sourced from Open-Meteo. Local timezone: America/Chicago.
Frequently asked questions
Normal is about 99 km north-east of Springfield, in Illinois.
Normal sees cold winters (December–February) with regular snow, colder near Lake Michigan.
The live current conditions, hourly forecast and 16-day outlook above are pulled in real time for Normal's exact coordinates. No fixed schedule, the page updates whenever you load it.
July is usually the hottest month in Normal, with average daytime highs of about 29°C and nights around 19°C.
The coldest nights come in January, when the average low is about -8°C and daytime highs reach around 0°C. Frost is possible on clear, calm nights.
Normal receives about 1000 mm of rain in a typical year. June is the wettest month at roughly 118 mm, and the main rainy period is May to July.
August to September usually offer the most comfortable weather in Normal, with mild daytime temperatures and little rain.
In November Normal typically sees daytime highs near 10°C and lows near 0°C, with about 66 mm of rain over the month and average humidity around 78%. Check the live forecast above for this week's actual conditions.
Up to 16 days ahead using the extended forecast and date picker above; further-out or historical dates use the same date lookup tool.
Live temperature for Normal is shown at the top of this page and refreshes automatically — see the hourly breakdown below for how it changes through the day.
Normal's day-to-day weather follows the broader pattern of Illinois described above. See the hourly weather forecast or the air quality index for more detail.