Historical Weather for Chicago, United States

Showing historical weather data for 1 Jan to 31 Dec over the last 5 years (2015-2015).

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Date window

Chicago, Illinois, United States (01-01 → 31-12)

Years 2015–2015 · Source: Open-Meteo Historical API

Showing 1 year series with 365 days for Chicago, Illinois, United States.

Latest Year Summary (2015)

Computed from observed daily Open-Meteo Historical API data for 2015 across the selected date window.

Average temperature

9.9°C

Long-term average unavailable

Total rainfall

1,085.1 mm

Across 2015 in the selected period

Rainfall details

  • 🌧️ 168 rain days
  • 💧 Wettest day: 2015-12-28 — 51.1 mm

Notable conditions

  • 🔥 Heatwave days: 0
  • 🥶 Frost days: 97
  • ❄️ Snow days: 42
  • 🌧️ Heavy rain days: 15

Average pressure

1,017.9 hPa

Weekly Rainfall Totals (2015)

Week of Dec 29: 26.7 mmWeek of Jan 5: 10.1 mmWeek of Jan 12: 2.5 mmWeek of Jan 19: 5.6 mmWeek of Jan 26: 33.3 mmWeek of Feb 2: 3.4 mmWeek of Feb 9: 0.9 mmWeek of Feb 16: 0.1 mmWeek of Feb 23: 6.1 mmWeek of Mar 2: 9.1 mmWeek of Mar 9: 0.0 mmWeek of Mar 16: 0.1 mmWeek of Mar 23: 16.5 mmWeek of Mar 30: 6.9 mmWeek of Apr 6: 57.3 mmWeek of Apr 13: 33.1 mmWeek of Apr 20: 13.4 mmWeek of Apr 27: 0.8 mmWeek of May 4: 63.1 mmWeek of May 11: 48.4 mmWeek of May 18: 2.7 mmWeek of May 25: 37.6 mmWeek of Jun 1: 32.8 mmWeek of Jun 8: 60.2 mmWeek of Jun 15: 30.6 mmWeek of Jun 22: 24.7 mmWeek of Jun 29: 8.5 mmWeek of Jul 6: 59.7 mmWeek of Jul 13: 39.2 mmWeek of Jul 20: 1.6 mmWeek of Jul 27: 10.6 mmWeek of Aug 3: 3.8 mmWeek of Aug 10: 1.7 mmWeek of Aug 17: 30.3 mmWeek of Aug 24: 17.5 mmWeek of Aug 31: 10.7 mmWeek of Sep 7: 37.3 mmWeek of Sep 14: 31.7 mmWeek of Sep 21: 0.2 mmWeek of Sep 28: 2.6 mmWeek of Oct 5: 0.7 mmWeek of Oct 12: 1.4 mmWeek of Oct 19: 9.5 mmWeek of Oct 26: 37.2 mmWeek of Nov 2: 6.0 mmWeek of Nov 9: 7.3 mmWeek of Nov 16: 53.1 mmWeek of Nov 23: 30.8 mmWeek of Nov 30: 16.1 mmWeek of Dec 7: 22.8 mmWeek of Dec 14: 17.1 mmWeek of Dec 21: 49.5 mmWeek of Dec 28: 52.2 mm
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Anomaly vs normal

n/a

No data

Record extremes

Daytime High: 30.6°C · 03 Sept 2015

Nighttime Low: -23.7°C · 20 Feb 2015

Precip & wind peaks

Rain: 51.1 mm · 28 Dec 2015

Wind: 25.4 kts · 12 Nov 2015

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How to read this weather history

Observed daily conditions for Chicago, Illinois, United States

The summary cards surface the main pattern first, while the chart and table below keep every day inspectable. Use this page for like-for-like date comparisons across years, not as a forecast.

Latest coverage

2015 · 365 days

01 Jan → 31 Dec from Open-Meteo Historical API.

Year span

2015

This view currently contains a single year of observations.

Observed extremes

High 30.6°C · Low -23.7°C

03 Sept 2015 to 20 Feb 2015 across 1 years.

Only one year is available for this selection, so the chart works best as a dated record of what happened rather than a long-term normal.

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Average temperature

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01 Jan→01 Jan

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2015

365 days

01 Jan → 31 Dec

Temperature

High: -15.6°C → 30.6°C

Low: -23.7°C → 23.7°C

Precipitation

Rain: 1,085.1 mm

Snow: 768.6 cm

Wind

21.5 km/h avg · 47.1 km/h peak

Accessible data table

Daily values for the first series (showing up to 30 rows)

DayHigh (°C)Low (°C)Rain (mm) (mm)Snow (cm) (cm)Wind (kts) (km/h)Conditions
01 Jan-0.8°C-7.5°C0.0 mm0.0 cm29.8 km/hOvercast
02 Jan0.6°C-5.5°C0.0 mm0.0 cm16.8 km/hOvercast
03 Jan1.0°C-1.0°C19.7 mm23.8 cm13.9 km/hModerate snowfall
04 Jan0.6°C-13.5°C7.0 mm46.2 cm27.6 km/hHeavy snowfall
05 Jan-12.8°C-18.0°C2.5 mm17.5 cm26.1 km/hModerate snowfall
06 Jan-11.7°C-15.0°C2.0 mm14.7 cm27.2 km/hModerate snowfall
07 Jan-13.4°C-20.5°C0.0 mm0.0 cm32.6 km/hPartly cloudy
08 Jan-7.0°C-22.5°C2.5 mm18.2 cm34.9 km/hModerate snowfall
09 Jan-9.2°C-17.6°C0.0 mm0.0 cm32.3 km/hOvercast
10 Jan-5.7°C-18.4°C0.0 mm0.0 cm24.5 km/hOvercast
11 Jan-0.2°C-7.2°C3.1 mm22.4 cm21.9 km/hHeavy snowfall
12 Jan-2.1°C-7.5°C1.0 mm7.0 cm26.8 km/hModerate snowfall
13 Jan-6.4°C-11.7°C0.0 mm0.0 cm20.7 km/hOvercast
14 Jan-7.9°C-15.6°C0.0 mm0.0 cm14.8 km/hOvercast
15 Jan-0.7°C-10.5°C0.0 mm0.0 cm22.3 km/hOvercast
16 Jan-0.4°C-4.9°C0.0 mm0.0 cm16.9 km/hOvercast
17 Jan4.7°C-3.4°C0.0 mm0.0 cm30.1 km/hOvercast
18 Jan3.6°C0.0°C1.5 mm1.4 cm23.3 km/hSlight snowfall
19 Jan2.7°C-3.1°C0.9 mm3.5 cm12.0 km/hModerate snowfall
20 Jan2.1°C-2.4°C1.1 mm2.8 cm12.6 km/hSlight snowfall
21 Jan0.5°C-1.4°C0.9 mm8.4 cm14.6 km/hModerate snowfall
22 Jan0.9°C-3.9°C0.0 mm0.0 cm9.9 km/hOvercast
23 Jan0.5°C-4.4°C0.0 mm0.0 cm18.9 km/hOvercast
24 Jan4.9°C-1.9°C0.0 mm0.0 cm20.5 km/hOvercast
25 Jan0.2°C-3.6°C2.7 mm19.6 cm32.2 km/hModerate snowfall
26 Jan-2.7°C-6.4°C0.9 mm8.4 cm18.6 km/hSlight snowfall
27 Jan-1.8°C-5.0°C0.4 mm2.8 cm13.9 km/hSlight snowfall
28 Jan0.5°C-8.8°C0.2 mm0.0 cm26.6 km/hLight drizzle
29 Jan2.1°C-0.7°C1.6 mm1.4 cm27.4 km/hSlight snowfall
30 Jan-1.2°C-6.5°C0.0 mm0.7 cm24.4 km/hSlight snowfall

Use this table for screen readers or to copy data. Values reflect the visible window.

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