As of 00:58 CDT

Weather in Thornton, IL

54°Current weather

Thornton, Sunday, 25 October, 00:58

Clear. Feels like 52°. High 72°, low 50°.

Pressure30.39 inHg
Wind4.6 mph S
Humidity75%
Visibility6.2 mi
Dew point46°

Monthly outlook for Thornton, IL: average high 65.5°, average low 53.2°. That is 6.2° above the climate normal for October. Precipitation is expected on 3 days (about 1.0 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 30 October (73.8°), the coolest 9 November (42°).

65.5°/53.2°
Average high / low
+6.2°
Above normal
3 / 5
Wet days / normal
1.0 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
25 October – 3 November69.9°55.7°+7.9°
4 November – 13 November58.1°50.6°+4.2°
14 November – 23 Novemberat normal46.7°—

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).

Mon, 2668° / 50°0Overcast
68 °Overcast

Thornton, Monday, 26 October

Overcast. High 68°, low 50°.

Pressure30.33 inHg
Wind3.9 mph NE
Humidity78%
Visibility6.2 mi
Dew point57°
Tue, 2769° / 50°0Partly cloudy
69 °Partly cloudy

Thornton, Tuesday, 27 October

Partly cloudy. High 69°, low 50°.

Pressure30.27 inHg
Wind4.6 mph SE
Humidity73%
Visibility6.2 mi
Dew point55°
Wed, 2872° / 56°0Clear
72 °Clear

Thornton, Wednesday, 28 October

Clear. High 72°, low 56°.

Pressure30.18 inHg
Wind8.5 mph S
Humidity61%
Visibility6.2 mi
Dew point54°
Thu, 2969° / 59°0.01Light rain
69 °Light rain

Thornton, Thursday, 29 October

Light rain. High 69°, low 59°.

Pressure30.15 inHg
Wind9.6 mph SW
Humidity66%
Visibility—
Dew point56°
Fri, 3074° / 56°0.11Light rain
74 °Light rain

Thornton, Friday, 30 October

Light rain. High 74°, low 56°.

Pressure30.15 inHg
Wind7.5 mph S
Humidity61%
Visibility—
Dew point55°
Sat, 3173° / 64°0.02Light rain
73 °Light rain

Thornton, Saturday, 31 October

Light rain. High 73°, low 64°.

Pressure30.06 inHg
Wind11.1 mph S
Humidity58%
Visibility—
Dew point53°
Sun, 0172° / 63°0.58Rain
72 °Rain

Thornton, Sunday, 1 November

Rain. High 72°, low 63°.

Pressure29.83 inHg
Wind17.8 mph S
Humidity70%
Visibility—
Dew point59°
Mon, 0269° / 58°0Partly cloudy
69 °Partly cloudy

Thornton, Monday, 2 November

Partly cloudy. High 69°, low 58°.

Pressure30.06 inHg
Wind9.8 mph NW
Humidity50%
Visibility—
Dew point47°
Tue, 0362° / 55°0Overcast
62 °Overcast

Thornton, Tuesday, 3 November

Overcast. High 62°, low 55°.

Pressure30.18 inHg
Wind8.5 mph SE
Humidity46%
Visibility—
Dew point39°
Wed, 0455° / 52°0.31Rain
55 °Rain

Thornton, Wednesday, 4 November

Rain. High 55°, low 52°.

Pressure29.62 inHg
Wind9.6 mph E
Humidity88%
Visibility—
Dew point50°
Thu, 0555° / 47°0Light rain
55 °Light rain

Thornton, Thursday, 5 November

Light rain. High 55°, low 47°.

Pressure30.03 inHg
Wind12.7 mph NW
Humidity39%
Visibility—
Dew point29°
Fri, 0661° / 45°0Overcast
61 °Overcast

Thornton, Friday, 6 November

Overcast. High 61°, low 45°.

Pressure29.94 inHg
Wind11.2 mph S
Humidity33%
Visibility—
Dew point28°
Sat, 0770° / 56°0Overcast
70 °Overcast

Thornton, Saturday, 7 November

Overcast. High 70°, low 56°.

Pressure29.53 inHg
Wind15.3 mph W
Humidity72%
Visibility—
Dew point58°
Sun, 0859° / 49°0Overcast
59 °Overcast

Thornton, Sunday, 8 November

Overcast. High 59°, low 49°.

Pressure29.91 inHg
Wind14.2 mph NW
Humidity40%
Visibility—
Dew point29°
Mon, 0948° / 42°0Clear
48 °Clear

Thornton, Monday, 9 November

Clear. High 48°, low 42°.

Pressure30.24 inHg
Wind9.4 mph N
Humidity37%
Visibility—
Dew point22°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Fri, 1347° / 35°0.05Climate normal
47 °Climate normal

Thornton, Friday, 13 November

Climate normal for this date — 60-year average.

Average high47°
Average low35°
Average precipitation0.05 in
Chance of precipitation20%
Record high68° (1999)
Record low3° (2019)
Sat, 1448° / 35°0.07Climate normal
48 °Climate normal

Thornton, Saturday, 14 November

Climate normal for this date — 60-year average.

Average high48°
Average low35°
Average precipitation0.07 in
Chance of precipitation33%
Record high69° (1971)
Record low15° (1986)
Sun, 1547° / 36°0.1Climate normal
47 °Climate normal

Thornton, Sunday, 15 November

Climate normal for this date — 60-year average.

Average high47°
Average low36°
Average precipitation0.1 in
Chance of precipitation32%
Record high67° (2025)
Record low21° (1982)
Mon, 1647° / 35°0.05Climate normal
47 °Climate normal

Thornton, Monday, 16 November

Climate normal for this date — 60-year average.

Average high47°
Average low35°
Average precipitation0.05 in
Chance of precipitation25%
Record high63° (2023)
Record low22° (1997)
Tue, 1748° / 36°0.09Climate normal
48 °Climate normal

Thornton, Tuesday, 17 November

Climate normal for this date — 60-year average.

Average high48°
Average low36°
Average precipitation0.09 in
Chance of precipitation30%
Record high68° (2016)
Record low17° (2014)
Wed, 1848° / 37°0.15Climate normal
48 °Climate normal

Thornton, Wednesday, 18 November

Climate normal for this date — 60-year average.

Average high48°
Average low37°
Average precipitation0.15 in
Chance of precipitation30%
Record high66° (2016)
Record low13° (2014)
Thu, 1947° / 36°0.08Climate normal
47 °Climate normal

Thornton, Thursday, 19 November

Climate normal for this date — 60-year average.

Average high47°
Average low36°
Average precipitation0.08 in
Chance of precipitation35%
Record high65° (1985)
Record low19° (2014)
Fri, 2046° / 35°0.1Climate normal
46 °Climate normal

Thornton, Friday, 20 November

Climate normal for this date — 60-year average.

Average high46°
Average low35°
Average precipitation0.1 in
Chance of precipitation37%
Record high62° (2003)
Record low14° (2022)
Sat, 2145° / 34°0.11Climate normal
45 °Climate normal

Thornton, Saturday, 21 November

Climate normal for this date — 60-year average.

Average high45°
Average low34°
Average precipitation0.11 in
Chance of precipitation27%
Record high66° (1990)
Record low12° (1964)
Sun, 2245° / 33°0.05Climate normal
45 °Climate normal

Thornton, Sunday, 22 November

Climate normal for this date — 60-year average.

Average high45°
Average low33°
Average precipitation0.05 in
Chance of precipitation18%
Record high67° (2010)
Record low12° (2015)
Mon, 2345° / 33°0.09Climate normal
45 °Climate normal

Thornton, Monday, 23 November

Climate normal for this date — 60-year average.

Average high45°
Average low33°
Average precipitation0.09 in
Chance of precipitation28%
Record high64° (2003)
Record low14° (1970)

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.