As of 05:54 CDT

Weather in Thornton, IL

65°Current weather

Thornton, Wednesday, 14 October, 05:54

Overcast. Feels like 65°. High 73°, low 60°.

Pressure29.94 inHg
Wind12.7 mph N
Humidity94%
Visibility6.2 mi
Dew point63°

Monthly outlook for Thornton, IL: average high 60.1°, average low 46.5°. That is 0.9° above the climate normal for October. Precipitation is expected on 3 days (about 1.8 inches), against a normal of 5 days and 1.7 inches. The warmest day looks like 14 October (72.6°), the coolest 26 October (36.4°).

60.1°/46.5°
Average high / low
+0.9°
Above normal
3 / 5
Wet days / normal
1.8 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
14 October – 23 October63.7°59.9°+2.1°
24 October – 2 November54.2°56.2°-1.1°
3 November – 12 Novemberat normal51.2°—

October records over 66 years

88.5°3 October 2025All-time high
26.2°26 October 1962All-time low

Climate normals and records are computed from the nearest reference point — Calumet Park (7 mi).

Thu, 1570° / 56°1.38Heavy rain
70 °Heavy rain

Thornton, Thursday, 15 October

Heavy rain. High 70°, low 56°.

Pressure29.97 inHg
Wind7.7 mph E
Humidity94%
Visibility2.2 mi
Dew point60°
Fri, 1665° / 47°0.26Rain
65 °Rain

Thornton, Friday, 16 October

Rain. High 65°, low 47°.

Pressure30.00 inHg
Wind14.6 mph NW
Humidity58%
Visibility6.2 mi
Dew point42°
Sat, 1755° / 40°0Clear
55 °Clear

Thornton, Saturday, 17 October

Clear. High 55°, low 40°.

Pressure30.53 inHg
Wind2.7 mph NW
Humidity60%
Visibility6.2 mi
Dew point39°
Sun, 1860° / 43°0Clear
60 °Clear

Thornton, Sunday, 18 October

Clear. High 60°, low 43°.

Pressure30.45 inHg
Wind10.1 mph SW
Humidity42%
Visibility—
Dew point33°
Mon, 1963° / 42°0Partly cloudy
63 °Partly cloudy

Thornton, Monday, 19 October

Partly cloudy. High 63°, low 42°.

Pressure30.39 inHg
Wind6.9 mph S
Humidity52%
Visibility—
Dew point42°
Tue, 2068° / 53°0Clear
68 °Clear

Thornton, Tuesday, 20 October

Clear. High 68°, low 53°.

Pressure30.27 inHg
Wind4.1 mph W
Humidity42%
Visibility—
Dew point42°
Wed, 2170° / 54°0Clear
70 °Clear

Thornton, Wednesday, 21 October

Clear. High 70°, low 54°.

Pressure30.09 inHg
Wind10.7 mph SW
Humidity43%
Visibility—
Dew point44°
Thu, 2261° / 50°0Clear
61 °Clear

Thornton, Thursday, 22 October

Clear. High 61°, low 50°.

Pressure30.27 inHg
Wind13.6 mph N
Humidity45%
Visibility—
Dew point35°
Fri, 2352° / 45°0Clear
52 °Clear

Thornton, Friday, 23 October

Clear. High 52°, low 45°.

Pressure30.42 inHg
Wind11.1 mph NE
Humidity45%
Visibility—
Dew point30°
Sat, 2458° / 43°0Overcast
58 °Overcast

Thornton, Saturday, 24 October

Overcast. High 58°, low 43°.

Pressure30.24 inHg
Wind6 mph SW
Humidity48%
Visibility—
Dew point35°
Sun, 2551° / 43°0.1Light rain
51 °Light rain

Thornton, Sunday, 25 October

Light rain. High 51°, low 43°.

Pressure29.97 inHg
Wind13.6 mph NW
Humidity83%
Visibility—
Dew point43°
Mon, 2651° / 36°0Mostly clear
51 °Mostly clear

Thornton, Monday, 26 October

Mostly clear. High 51°, low 36°.

Pressure30.06 inHg
Wind9.9 mph NW
Humidity33%
Visibility—
Dew point19°
Tue, 2755° / 43°0Partly cloudy
55 °Partly cloudy

Thornton, Tuesday, 27 October

Partly cloudy. High 55°, low 43°.

Pressure30.00 inHg
Wind5.5 mph NE
Humidity38%
Visibility—
Dew point28°
Wed, 2857° / 43°0Mostly clear
57 °Mostly clear

Thornton, Wednesday, 28 October

Mostly clear. High 57°, low 43°.

Pressure30.00 inHg
Wind6.3 mph NE
Humidity40%
Visibility—
Dew point30°
Thu, 2954° / 46°0Partly cloudy
54 °Partly cloudy

Thornton, Thursday, 29 October

Partly cloudy. High 54°, low 46°.

Pressure29.97 inHg
Wind7.8 mph NE
Humidity52%
Visibility—
Dew point36°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 3057° / 44°0.12Climate normal
57 °Climate normal

Thornton, Friday, 30 October

Climate normal for this date — 60-year average.

Average high57°
Average low44°
Average precipitation0.12 in
Chance of precipitation30%
Record high78° (2024)
Record low30° (1988)
Sat, 3156° / 45°0.15Climate normal
56 °Climate normal

Thornton, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high56°
Average low45°
Average precipitation0.15 in
Chance of precipitation40%
Record high73° (1974)
Record low27° (2023)
Sun, 0155° / 43°0.18Climate normal
55 °Climate normal

Thornton, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high55°
Average low43°
Average precipitation0.18 in
Chance of precipitation43%
Record high73° (2016)
Record low23° (2019)
Mon, 0254° / 42°0.12Climate normal
54 °Climate normal

Thornton, Monday, 2 November

Climate normal for this date — 60-year average.

Average high54°
Average low42°
Average precipitation0.12 in
Chance of precipitation40%
Record high73° (1961)
Record low25° (1991)
Tue, 0353° / 41°0.07Climate normal
53 °Climate normal

Thornton, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high53°
Average low41°
Average precipitation0.07 in
Chance of precipitation25%
Record high72° (1987)
Record low19° (1991)
Wed, 0453° / 43°0.09Climate normal
53 °Climate normal

Thornton, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high53°
Average low43°
Average precipitation0.09 in
Chance of precipitation27%
Record high71° (2015)
Record low19° (1991)
Thu, 0553° / 41°0.13Climate normal
53 °Climate normal

Thornton, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high53°
Average low41°
Average precipitation0.13 in
Chance of precipitation32%
Record high74° (1978)
Record low20° (1991)
Fri, 0653° / 40°0.07Climate normal
53 °Climate normal

Thornton, Friday, 6 November

Climate normal for this date — 60-year average.

Average high53°
Average low40°
Average precipitation0.07 in
Chance of precipitation30%
Record high72° (1975)
Record low25° (1991)
Sat, 0752° / 40°0.06Climate normal
52 °Climate normal

Thornton, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high52°
Average low40°
Average precipitation0.06 in
Chance of precipitation20%
Record high70° (2020)
Record low22° (1991)
Sun, 0851° / 39°0.06Climate normal
51 °Climate normal

Thornton, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high51°
Average low39°
Average precipitation0.06 in
Chance of precipitation20%
Record high74° (2020)
Record low17° (1991)
Mon, 0952° / 40°0.13Climate normal
52 °Climate normal

Thornton, Monday, 9 November

Climate normal for this date — 60-year average.

Average high52°
Average low40°
Average precipitation0.13 in
Chance of precipitation35%
Record high72° (2020)
Record low20° (1991)
Tue, 1051° / 39°0.13Climate normal
51 °Climate normal

Thornton, Tuesday, 10 November

Climate normal for this date — 60-year average.

Average high51°
Average low39°
Average precipitation0.13 in
Chance of precipitation40%
Record high73° (2020)
Record low18° (2018)
Wed, 1148° / 37°0.08Climate normal
48 °Climate normal

Thornton, Wednesday, 11 November

Climate normal for this date — 60-year average.

Average high48°
Average low37°
Average precipitation0.08 in
Chance of precipitation32%
Record high70° (1964)
Record low19° (2019)
Thu, 1247° / 35°0.06Climate normal
47 °Climate normal

Thornton, Thursday, 12 November

Climate normal for this date — 60-year average.

Average high47°
Average low35°
Average precipitation0.06 in
Chance of precipitation23%
Record high68° (1964)
Record low6° (2019)

About the monthly outlook

How accurate is a 30-day forecast?

The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Thornton, IL are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.

What does "above normal" mean?

We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.

Where do the 66-year records come from?

They are real temperature extremes recorded in Thornton, IL since 1960: the highest and lowest reading for each calendar date, with the year it happened.

How often is it updated?

The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.