As of 13:03 CDT

Weather in Forreston, IL

84°Current weather

Forreston, Monday, 12 October, 13:03

Mostly clear. Feels like 82°. High 84°, low 62°.

Pressure29.77 inHg
Wind13.8 mph SW
Humidity24%
Visibility6.2 mi
Dew point50°

Monthly outlook for Forreston, IL: average high 65.1°, average low 51.7°. That is 3.7° above the climate normal for October. Precipitation is expected on 5 days (about 1.5 inches), against a normal of 5 days and 1.5 inches. The warmest day looks like 12 October (84.4°), the coolest 26 October (37°).

65.1°/51.7°
Average high / low
+3.7°
Above normal
5 / 5
Wet days / normal
1.5 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
12 October – 21 October65.7°59.6°+3.4°
22 October – 31 October64.1°55.9°+4.6°
1 November – 10 Novemberat normal50.8°—

October records over 66 years

86.4°3 October 2025All-time high
21.4°30 October 1988All-time low

Climate normals and records are computed from the nearest reference point — Freeport (12 mi).

Tue, 1377° / 62°0.01Light rain
77 °Light rain

Forreston, Tuesday, 13 October

Light rain. High 77°, low 62°.

Pressure29.85 inHg
Wind8.5 mph W
Humidity66%
Visibility6.2 mi
Dew point59°
Wed, 1470° / 57°0.02Light rain
70 °Light rain

Forreston, Wednesday, 14 October

Light rain. High 70°, low 57°.

Pressure30.12 inHg
Wind6.2 mph NE
Humidity67%
Visibility6.2 mi
Dew point55°
Thu, 1561° / 56°0.27Rain
61 °Rain

Forreston, Thursday, 15 October

Rain. High 61°, low 56°.

Pressure30.09 inHg
Wind8.3 mph E
Humidity81%
Visibility6.2 mi
Dew point54°
Fri, 1657° / 46°0Overcast
57 °Overcast

Forreston, Friday, 16 October

Overcast. High 57°, low 46°.

Pressure30.39 inHg
Wind19.4 mph N
Humidity53%
Visibility6.2 mi
Dew point36°
Sat, 1759° / 38°0Clear
59 °Clear

Forreston, Saturday, 17 October

Clear. High 59°, low 38°.

Pressure30.45 inHg
Wind11.3 mph SW
Humidity38%
Visibility—
Dew point30°
Sun, 1859° / 41°0Clear
59 °Clear

Forreston, Sunday, 18 October

Clear. High 59°, low 41°.

Pressure30.21 inHg
Wind19.2 mph SW
Humidity43%
Visibility—
Dew point32°
Mon, 1958° / 46°0.44Rain
58 °Rain

Forreston, Monday, 19 October

Rain. High 58°, low 46°.

Pressure30.18 inHg
Wind13.7 mph SW
Humidity54%
Visibility—
Dew point40°
Tue, 2062° / 50°0.17Rain
62 °Rain

Forreston, Tuesday, 20 October

Rain. High 62°, low 50°.

Pressure30.21 inHg
Wind7 mph E
Humidity83%
Visibility—
Dew point53°
Wed, 2171° / 54°0Partly cloudy
71 °Partly cloudy

Forreston, Wednesday, 21 October

Partly cloudy. High 71°, low 54°.

Pressure30.27 inHg
Wind11.8 mph SE
Humidity69%
Visibility—
Dew point57°
Thu, 2272° / 59°0Overcast
72 °Overcast

Forreston, Thursday, 22 October

Overcast. High 72°, low 59°.

Pressure30.27 inHg
Wind13.2 mph S
Humidity67%
Visibility—
Dew point57°
Fri, 2371° / 63°0.11Light rain
71 °Light rain

Forreston, Friday, 23 October

Light rain. High 71°, low 63°.

Pressure30.21 inHg
Wind12.3 mph S
Humidity77%
Visibility—
Dew point62°
Sat, 2467° / 64°0.44Rain
67 °Rain

Forreston, Saturday, 24 October

Rain. High 67°, low 64°.

Pressure29.91 inHg
Wind20.9 mph SW
Humidity77%
Visibility—
Dew point59°
Sun, 2560° / 48°0Light rain
60 °Light rain

Forreston, Sunday, 25 October

Light rain. High 60°, low 48°.

Pressure29.94 inHg
Wind19.1 mph NW
Humidity74%
Visibility—
Dew point44°
Mon, 2655° / 37°0Clear
55 °Clear

Forreston, Monday, 26 October

Clear. High 55°, low 37°.

Pressure30.18 inHg
Wind12.5 mph W
Humidity45%
Visibility—
Dew point30°
Tue, 2759° / 43°0Partly cloudy
59 °Partly cloudy

Forreston, Tuesday, 27 October

Partly cloudy. High 59°, low 43°.

Pressure29.83 inHg
Wind21.3 mph NW
Humidity56%
Visibility—
Dew point42°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 2855° / 40°0.06Climate normal
55 °Climate normal

Forreston, Wednesday, 28 October

Climate normal for this date — 60-year average.

Average high55°
Average low40°
Average precipitation0.06 in
Chance of precipitation22%
Record high71° (1999)
Record low24° (1969)
Thu, 2955° / 40°0.06Climate normal
55 °Climate normal

Forreston, Thursday, 29 October

Climate normal for this date — 60-year average.

Average high55°
Average low40°
Average precipitation0.06 in
Chance of precipitation23%
Record high78° (2024)
Record low23° (1980)
Fri, 3056° / 41°0.1Climate normal
56 °Climate normal

Forreston, Friday, 30 October

Climate normal for this date — 60-year average.

Average high56°
Average low41°
Average precipitation0.1 in
Chance of precipitation32%
Record high77° (2024)
Record low21° (1988)
Sat, 3154° / 41°0.11Climate normal
54 °Climate normal

Forreston, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high54°
Average low41°
Average precipitation0.11 in
Chance of precipitation37%
Record high71° (1974)
Record low24° (2019)
Sun, 0153° / 40°0.2Climate normal
53 °Climate normal

Forreston, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high53°
Average low40°
Average precipitation0.2 in
Chance of precipitation38%
Record high74° (2000)
Record low20° (2019)
Mon, 0252° / 39°0.13Climate normal
52 °Climate normal

Forreston, Monday, 2 November

Climate normal for this date — 60-year average.

Average high52°
Average low39°
Average precipitation0.13 in
Chance of precipitation32%
Record high73° (1961)
Record low20° (1991)
Tue, 0352° / 38°0.06Climate normal
52 °Climate normal

Forreston, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high52°
Average low38°
Average precipitation0.06 in
Chance of precipitation27%
Record high71° (1964)
Record low15° (1991)
Wed, 0451° / 39°0.09Climate normal
51 °Climate normal

Forreston, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high51°
Average low39°
Average precipitation0.09 in
Chance of precipitation28%
Record high70° (2015)
Record low13° (1991)
Thu, 0551° / 37°0.1Climate normal
51 °Climate normal

Forreston, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high51°
Average low37°
Average precipitation0.1 in
Chance of precipitation22%
Record high70° (1978)
Record low18° (1991)
Fri, 0651° / 36°0.08Climate normal
51 °Climate normal

Forreston, Friday, 6 November

Climate normal for this date — 60-year average.

Average high51°
Average low36°
Average precipitation0.08 in
Chance of precipitation35%
Record high69° (2020)
Record low20° (1991)
Sat, 0750° / 36°0.03Climate normal
50 °Climate normal

Forreston, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high50°
Average low36°
Average precipitation0.03 in
Chance of precipitation18%
Record high68° (2020)
Record low10° (1991)
Sun, 0850° / 36°0.05Climate normal
50 °Climate normal

Forreston, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high50°
Average low36°
Average precipitation0.05 in
Chance of precipitation15%
Record high71° (2020)
Record low13° (1991)
Mon, 0949° / 36°0.12Climate normal
49 °Climate normal

Forreston, Monday, 9 November

Climate normal for this date — 60-year average.

Average high49°
Average low36°
Average precipitation0.12 in
Chance of precipitation35%
Record high73° (2020)
Record low17° (1991)
Tue, 1048° / 35°0.09Climate normal
48 °Climate normal

Forreston, Tuesday, 10 November

Climate normal for this date — 60-year average.

Average high48°
Average low35°
Average precipitation0.09 in
Chance of precipitation30%
Record high71° (2022)
Record low15° (2017)

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 Forreston, 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 Forreston, 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.