Aurora, IL Climate & Monthly Averages
Aurora has a humid continental climate. July is the hottest month, averaging 82° by day; January is the coldest at 31°.
Aurora's climate is a story of contrasts
Aurora spends most of the year cold. July, the warmest month, averages 82°F (28°C) by day - a figure many cities in our dataset pass in early spring - while January holds at 31°F (0°C) with 128 wet days a year across the whole calendar.
July
82° by day 65° at nightJanuary
31° by day 17° at nightThe two ends of the year
January sits at the other end of the year: 31°F (0°C) by day, 17°F (-8°C) at night. July is the warm end of the year, averaging 82°F (28°C) by day and 65°F (18°C) overnight. The gridded 2015-2024 daily record for this location tops out at 98°F (37°C) and bottoms at -29°F (-34°C) - decade extremes, not all-time station records. Snow falls on roughly 17 days a year, mostly November through April.
Sunshine averages 8.3 hours a day over the year - duller than about 75% of the cities we track, peaking in July at 11.5 hours. Overnight lows average at or below freezing for 4 months, December through March. The wettest month is July (5.3 inches (136 mm) across 13 days) and the driest February. Between the average July and the average January lie 27°C, a wider spread than 92% of the 3496 cities in our dataset.
More climate facts for Aurora
- Hottest month: July - highs near 82°F (28°C)
- Coldest month: January - highs near 31°F (0°C)
- Decade extremes (2015-2024): 98°F (37°C) high · -29°F (-34°C) low
- Wettest month: July (13 rainy days) · Sunniest: July (11.5 h sun/day)
- Climate type: humid continental
- Annual swing: 27°C between the average warmest and coolest month · day to night: 9°C
- Snow: about 17 days a year
- Months with freezing average lows: 4
- Average humidity: 71%
Four distinct parts of the year in Aurora
Spring (March through May)
Spring is mild here - highs near 59°F (15°C), nights near 40°F (4°C), and rain falls on around 38 of the 90 days, plus about 4 snowy days.
Summer (June through August)
Through summer, Aurora brings hot afternoons: 81°F (27°C) by day, 63°F (17°C) after dark, and rain falls on around 37 of the 90 days. Daylight is generous - around 11.4 hours of sun a day.
Fall (September through November)
Through fall, Aurora stays on the cool side of mild: 62°F (17°C) by day, 47°F (8°C) after dark, and expect showers on roughly 27 days across the season.
Winter (December through February)
Winter in Aurora is frigid, with daytime highs averaging 35°F (2°C) and nights around 21°F (-6°C); expect showers on roughly 26 days across the season, plus about 12 snowy days. Wind sharpens cold like this considerably; pair the forecast winds with the wind speed converter to judge exposed conditions.
Aurora temperature extremes in the 2015–2024 dataset
Derived from ERA5 reanalysis data, 2015–2024. Official station records may differ. Need another precipitation unit? Use the rainfall converter.
Choosing a season in Aurora
Best time to visit Aurora
The best time to visit Aurora is generally May to October, when these are the warmest and brightest weeks of the year. Daytime temperatures in that window sit near 75°F (24°C), with rain on about 12 days a month. For the same question asked the other way round, see where else is warm in May.
What to pack
Pack for Aurora with light clothing for the warm months, a heavy insulated coat, hat and gloves for winter and a compact umbrella or rain shell. Even in July, lows of 65°F (18°C) make an extra layer worth the space.
Monthly highs, lows and seasonal change
| Month | High | Low | Rain days | Precipitation | Sunshine | Daylight | Wet-day chance | Humidity |
|---|---|---|---|---|---|---|---|---|
| January | 31° | 17° | 10 | 2.4 in | 4.9 h/day | 9.5 h | 31% | 76% |
| February | 36° | 19° | 8 | 2.2 in | 6.9 h/day | 10.5 h | 28% | 70% |
| March | 48° | 30° | 12 | 3.4 in | 7.6 h/day | 11.8 h | 37% | 69% |
| April | 58° | 39° | 12 | 4.1 in | 8.5 h/day | 13.3 h | 42% | 67% |
| May | 70° | 51° | 14 | 5.3 in | 10.0 h/day | 14.5 h | 45% | 70% |
| June | 80° | 61° | 12 | 4.7 in | 11.4 h/day | 15.2 h | 40% | 69% |
| July | 82° | 65° | 13 | 5.3 in | 11.5 h/day | 14.9 h | 42% | 74% |
| August | 81° | 64° | 12 | 4.3 in | 11.2 h/day | 13.8 h | 39% | 74% |
| September | 76° | 59° | 8 | 3.6 in | 9.6 h/day | 12.4 h | 28% | 72% |
| October | 62° | 47° | 11 | 4.4 in | 7.2 h/day | 11.0 h | 34% | 70% |
| November | 48° | 34° | 8 | 2.5 in | 6.0 h/day | 9.8 h | 26% | 72% |
| December | 39° | 25° | 9 | 2.6 in | 5.1 h/day | 9.2 h | 28% | 74% |
Aurora from the coldest month to the hottest
Each card shows the average high and low. The bar places that month between Aurora's coldest night and warmest afternoon.
January
- Rain
- 10 days
- Sunshine
- 4.9 h
- Daylight
- 9.5 h
- Snow
- 5 days
February
- Rain
- 8 days
- Sunshine
- 6.9 h
- Daylight
- 10.5 h
- Snow
- 4 days
March
- Rain
- 12 days
- Sunshine
- 7.6 h
- Daylight
- 11.8 h
- Snow
- 2 days
April
- Rain
- 12 days
- Sunshine
- 8.5 h
- Daylight
- 13.3 h
- Snow
- 1 day
May
- Rain
- 14 days
- Sunshine
- 10.0 h
- Daylight
- 14.5 h
June
- Rain
- 12 days
- Sunshine
- 11.4 h
- Daylight
- 15.2 h
July
- Rain
- 13 days
- Sunshine
- 11.5 h
- Daylight
- 14.9 h
August
- Rain
- 12 days
- Sunshine
- 11.2 h
- Daylight
- 13.8 h
September
- Rain
- 8 days
- Sunshine
- 9.6 h
- Daylight
- 12.4 h
October
- Rain
- 11 days
- Sunshine
- 7.2 h
- Daylight
- 11.0 h
November
- Rain
- 8 days
- Sunshine
- 6.0 h
- Daylight
- 9.8 h
- Snow
- 1 day
December
- Rain
- 9 days
- Sunshine
- 5.1 h
- Daylight
- 9.2 h
- Snow
- 2 days
Looking for warmer alternatives? Browse warm places by month, or compare Aurora's coolest part of the year: January, February, December.
Where Aurora sits among other climates
- Aurora sits close to the middle of our dataset on most measures: 51°F (10°C) as an annual average, 44.7 inches (1136 mm) of precipitation and 8.3 hours of sun a day.
These comparisons use the same ten-year window for every city in the dataset.