As of 18:31 CDT

Weather in Alta, IL

73°Current weather

Alta, Wednesday, 7 October, 18:31

Clear. Feels like 72°. High 81°, low 56°.

Pressure29.91 inHg
Wind6.4 mph NW
Humidity48%
Visibility6.2 mi
Dew point52°

Monthly outlook for Alta, IL: average high 70.7°, average low 51.8°. That is 4.1° above the climate normal for October. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 4 days and 1.5 inches. The warmest day looks like 15 October (90°), the coolest 18 October (38°).

70.7°/51.8°
Average high / low
+4.1°
Above normal
0 / 4
Wet days / normal
0.0 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
7 October – 16 October77.2°64.8°+6.9°
17 October – 26 October59.8°60.1°-0.1°
27 October – 5 Novemberat normal56.2°—

October records over 66 years

89.1°3 October 2025All-time high
21°22 October 1976All-time low

Climate normals and records are computed from the nearest reference point — Peoria (4 mi).

Thu, 0876° / 50°0Clear
76 °Clear

Alta, Thursday, 8 October

Clear. High 76°, low 50°.

Pressure30.12 inHg
Wind3.1 mph N
Humidity40%
Visibility6.2 mi
Dew point45°
Fri, 0979° / 52°0Overcast
79 °Overcast

Alta, Friday, 9 October

Overcast. High 79°, low 52°.

Pressure30.12 inHg
Wind9.8 mph S
Humidity51%
Visibility6.2 mi
Dew point53°
Sat, 1082° / 60°0Clear
82 °Clear

Alta, Saturday, 10 October

Clear. High 82°, low 60°.

Pressure30.12 inHg
Wind8.8 mph S
Humidity50%
Visibility6.2 mi
Dew point57°
Sun, 1169° / 60°0Overcast
69 °Overcast

Alta, Sunday, 11 October

Overcast. High 69°, low 60°.

Pressure29.94 inHg
Wind7.4 mph E
Humidity72%
Visibility6.2 mi
Dew point57°
Mon, 1282° / 55°0Clear
82 °Clear

Alta, Monday, 12 October

Clear. High 82°, low 55°.

Pressure29.83 inHg
Wind11.9 mph S
Humidity55%
Visibility—
Dew point58°
Tue, 1371° / 56°0Mostly clear
71 °Mostly clear

Alta, Tuesday, 13 October

Mostly clear. High 71°, low 56°.

Pressure30.00 inHg
Wind13.2 mph N
Humidity55%
Visibility—
Dew point49°
Wed, 1476° / 52°0.01Light rain
76 °Light rain

Alta, Wednesday, 14 October

Light rain. High 76°, low 52°.

Pressure29.91 inHg
Wind18.4 mph SE
Humidity46%
Visibility—
Dew point49°
Thu, 1590° / 61°0.01Light rain
90 °Light rain

Alta, Thursday, 15 October

Light rain. High 90°, low 61°.

Pressure29.74 inHg
Wind24 mph SW
Humidity45%
Visibility—
Dew point64°
Fri, 1665° / 52°0Clear
65 °Clear

Alta, Friday, 16 October

Clear. High 65°, low 52°.

Pressure30.30 inHg
Wind15.1 mph NW
Humidity47%
Visibility—
Dew point43°
Sat, 1754° / 41°0Partly cloudy
54 °Partly cloudy

Alta, Saturday, 17 October

Partly cloudy. High 54°, low 41°.

Pressure30.39 inHg
Wind14.7 mph N
Humidity46%
Visibility—
Dew point32°
Sun, 1858° / 38°0Mostly clear
58 °Mostly clear

Alta, Sunday, 18 October

Mostly clear. High 58°, low 38°.

Pressure30.39 inHg
Wind7 mph E
Humidity38%
Visibility—
Dew point29°
Mon, 1963° / 40°0Overcast
63 °Overcast

Alta, Monday, 19 October

Overcast. High 63°, low 40°.

Pressure30.45 inHg
Wind14.8 mph SE
Humidity31%
Visibility—
Dew point27°
Tue, 2057° / 53°0Light rain
57 °Light rain

Alta, Tuesday, 20 October

Light rain. High 57°, low 53°.

Pressure30.30 inHg
Wind10.6 mph SE
Humidity64%
Visibility—
Dew point44°
Wed, 2165° / 52°0Overcast
65 °Overcast

Alta, Wednesday, 21 October

Overcast. High 65°, low 52°.

Pressure30.09 inHg
Wind8.2 mph N
Humidity61%
Visibility—
Dew point50°
Thu, 2261° / 50°0Light rain
61 °Light rain

Alta, Thursday, 22 October

Light rain. High 61°, low 50°.

Pressure29.83 inHg
Wind7.9 mph N
Humidity48%
Visibility—
Dew point40°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 2361° / 45°0.12Climate normal
61 °Climate normal

Alta, Friday, 23 October

Climate normal for this date — 60-year average.

Average high61°
Average low45°
Average precipitation0.12 in
Chance of precipitation37%
Record high79° (1963)
Record low28° (1976)
Sat, 2459° / 45°0.14Climate normal
59 °Climate normal

Alta, Saturday, 24 October

Climate normal for this date — 60-year average.

Average high59°
Average low45°
Average precipitation0.14 in
Chance of precipitation32%
Record high79° (1963)
Record low24° (1981)
Sun, 2558° / 44°0.11Climate normal
58 °Climate normal

Alta, Sunday, 25 October

Climate normal for this date — 60-year average.

Average high58°
Average low44°
Average precipitation0.11 in
Chance of precipitation27%
Record high75° (2011)
Record low27° (2013)
Mon, 2657° / 43°0.11Climate normal
57 °Climate normal

Alta, Monday, 26 October

Climate normal for this date — 60-year average.

Average high57°
Average low43°
Average precipitation0.11 in
Chance of precipitation32%
Record high80° (1963)
Record low24° (1962)
Tue, 2758° / 43°0.08Climate normal
58 °Climate normal

Alta, Tuesday, 27 October

Climate normal for this date — 60-year average.

Average high58°
Average low43°
Average precipitation0.08 in
Chance of precipitation30%
Record high74° (2014)
Record low29° (1997)
Wed, 2857° / 42°0.04Climate normal
57 °Climate normal

Alta, Wednesday, 28 October

Climate normal for this date — 60-year average.

Average high57°
Average low42°
Average precipitation0.04 in
Chance of precipitation20%
Record high74° (1999)
Record low25° (1976)
Thu, 2957° / 42°0.08Climate normal
57 °Climate normal

Alta, Thursday, 29 October

Climate normal for this date — 60-year average.

Average high57°
Average low42°
Average precipitation0.08 in
Chance of precipitation25%
Record high78° (2024)
Record low23° (1980)
Fri, 3059° / 43°0.11Climate normal
59 °Climate normal

Alta, Friday, 30 October

Climate normal for this date — 60-year average.

Average high59°
Average low43°
Average precipitation0.11 in
Chance of precipitation28%
Record high79° (1971)
Record low25° (1988)
Sat, 3158° / 43°0.17Climate normal
58 °Climate normal

Alta, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high58°
Average low43°
Average precipitation0.17 in
Chance of precipitation42%
Record high74° (1974)
Record low24° (2019)
Sun, 0157° / 42°0.18Climate normal
57 °Climate normal

Alta, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high57°
Average low42°
Average precipitation0.18 in
Chance of precipitation32%
Record high77° (2016)
Record low22° (2019)
Mon, 0255° / 41°0.08Climate normal
55 °Climate normal

Alta, Monday, 2 November

Climate normal for this date — 60-year average.

Average high55°
Average low41°
Average precipitation0.08 in
Chance of precipitation33%
Record high75° (1961)
Record low23° (1991)
Tue, 0354° / 40°0.09Climate normal
54 °Climate normal

Alta, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high54°
Average low40°
Average precipitation0.09 in
Chance of precipitation23%
Record high74° (1964)
Record low17° (1991)
Wed, 0454° / 41°0.08Climate normal
54 °Climate normal

Alta, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high54°
Average low41°
Average precipitation0.08 in
Chance of precipitation23%
Record high74° (1978)
Record low16° (1991)
Thu, 0553° / 39°0.13Climate normal
53 °Climate normal

Alta, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high53°
Average low39°
Average precipitation0.13 in
Chance of precipitation25%
Record high74° (1978)
Record low19° (1991)

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 Alta, 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 Alta, 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.