As of 10:28 CDT

Weather in Erwin, IL

68°

Erwin, Friday, 9 October, 10:28

Clear. Feels like 68°. High 85°, low 56°.

Pressure30.12 inHg

Wind9.2 mph E

Humidity64%

Visibility6.2 mi

Dew point56°

See detailed hourly forecast

Monthly outlook for Erwin, IL: average high 69.3°, average low 51.4°. That is 2.9° above the climate normal for October. Precipitation is expected on 4 days (about 3.0 inches), against a normal of 4 days and 1.5 inches. The warmest day looks like 12 October (89.5°), the coolest 18 October (34°).

69.3°/51.4°

Average high / low

+2.9°

Above normal

4 / 4

Wet days / normal

3.0 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
9 October – 18 October	73.5°	65.3°	+4.6°
19 October – 28 October	62.2°	61°	+0.7°
29 October – 7 November	at normal	56.7°	—

October records over 66 years

90.1°10 October 1963All-time high

25.2°26 October 1962All-time low

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

Sat, 1080° / 58°

80 °

Erwin, Saturday, 10 October

Overcast. High 80°, low 58°.

Pressure30.03 inHg

Wind6.4 mph SE

Humidity49%

Visibility6.2 mi

Dew point55°

Sun, 1184° / 56°

84 °

Erwin, Sunday, 11 October

Clear. High 84°, low 56°.

Pressure29.94 inHg

Wind4.3 mph S

Humidity46%

Visibility6.2 mi

Dew point55°

Mon, 1290° / 68°

90 °

Erwin, Monday, 12 October

Clear. High 90°, low 68°.

Pressure29.83 inHg

Wind11 mph SW

Humidity47%

Visibility6.2 mi

Dew point62°

Tue, 1383° / 69°

0.03

83 °

Erwin, Tuesday, 13 October

Light rain. High 83°, low 69°.

Pressure29.85 inHg

Wind12.2 mph SW

Humidity54%

Visibility—

Dew point63°

Wed, 1467° / 63°

1.25

67 °

Erwin, Wednesday, 14 October

Rain. High 67°, low 63°.

Pressure30.00 inHg

Wind10 mph E

Humidity85%

Visibility—

Dew point61°

Thu, 1567° / 56°

1.43

67 °

Erwin, Thursday, 15 October

Rain. High 67°, low 56°.

Pressure29.94 inHg

Wind14.7 mph SE

Humidity95%

Visibility—

Dew point55°

Fri, 1674° / 45°

0.08

74 °

Erwin, Friday, 16 October

Light rain. High 74°, low 45°.

Pressure30.03 inHg

Wind25.2 mph NW

Humidity36%

Visibility—

Dew point29°

Sat, 1748° / 37°

48 °

Erwin, Saturday, 17 October

Clear. High 48°, low 37°.

Pressure30.45 inHg

Wind20.7 mph NW

Humidity45%

Visibility—

Dew point25°

Sun, 1858° / 34°

58 °

Erwin, Sunday, 18 October

Clear. High 58°, low 34°.

Pressure30.33 inHg

Wind13.5 mph SW

Humidity36%

Visibility—

Dew point25°

Mon, 1966° / 42°

66 °

Erwin, Monday, 19 October

Mostly clear. High 66°, low 42°.

Pressure30.21 inHg

Wind11.3 mph SW

Humidity35%

Visibility—

Dew point33°

Tue, 2069° / 47°

69 °

Erwin, Tuesday, 20 October

Clear. High 69°, low 47°.

Pressure30.30 inHg

Wind9.5 mph S

Humidity31%

Visibility—

Dew point33°

Wed, 2174° / 54°

74 °

Erwin, Wednesday, 21 October

Overcast. High 74°, low 54°.

Pressure30.21 inHg

Wind12.1 mph S

Humidity43%

Visibility—

Dew point45°

Thu, 2264° / 60°

0.2

64 °

Erwin, Thursday, 22 October

Light rain. High 64°, low 60°.

Pressure29.97 inHg

Wind16 mph NW

Humidity79%

Visibility—

Dew point56°

Fri, 2353° / 43°

53 °

Erwin, Friday, 23 October

Mostly clear. High 53°, low 43°.

Pressure30.09 inHg

Wind19.7 mph NW

Humidity46%

Visibility—

Dew point32°

Sat, 2448° / 35°

48 °

Erwin, Saturday, 24 October

Clear. High 48°, low 35°.

Pressure30.27 inHg

Wind11.5 mph N

Humidity47%

Visibility—

Dew point26°

From day 17 onward the outlook is built from 60-year climate statistics

Sun, 2560° / 45°

0.12

60 °

Erwin, Sunday, 25 October

Climate normal for this date — 60-year average.

Average high60°

Average low45°

Average precipitation0.12 in

Chance of precipitation25%

Record high78° (2011)

Record low31° (2013)

Mon, 2659° / 44°

0.11

59 °

Erwin, Monday, 26 October

Climate normal for this date — 60-year average.

Average high59°

Average low44°

Average precipitation0.11 in

Chance of precipitation32%

Record high83° (1963)

Record low25° (1962)

Tue, 2759° / 44°

0.08

59 °

Erwin, Tuesday, 27 October

Climate normal for this date — 60-year average.

Average high59°

Average low44°

Average precipitation0.08 in

Chance of precipitation25%

Record high75° (2014)

Record low29° (1997)

Wed, 2858° / 44°

0.04

58 °

Erwin, Wednesday, 28 October

Climate normal for this date — 60-year average.

Average high58°

Average low44°

Average precipitation0.04 in

Chance of precipitation22%

Record high76° (1999)

Record low27° (1976)

Thu, 2959° / 44°

0.08

59 °

Erwin, Thursday, 29 October

Climate normal for this date — 60-year average.

Average high59°

Average low44°

Average precipitation0.08 in

Chance of precipitation23%

Record high80° (2024)

Record low26° (1980)

Fri, 3060° / 45°

0.13

60 °

Erwin, Friday, 30 October

Climate normal for this date — 60-year average.

Average high60°

Average low45°

Average precipitation0.13 in

Chance of precipitation30%

Record high78° (2024)

Record low27° (1980)

Sat, 3159° / 45°

0.19

59 °

Erwin, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high59°

Average low45°

Average precipitation0.19 in

Chance of precipitation43%

Record high77° (1968)

Record low27° (1993)

Sun, 0158° / 44°

0.19

58 °

Erwin, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high58°

Average low44°

Average precipitation0.19 in

Chance of precipitation30%

Record high78° (2016)

Record low24° (2023)

Mon, 0257° / 42°

0.07

57 °

Erwin, Monday, 2 November

Climate normal for this date — 60-year average.

Average high57°

Average low42°

Average precipitation0.07 in

Chance of precipitation32%

Record high76° (1961)

Record low24° (1991)

Tue, 0356° / 41°

0.11

56 °

Erwin, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high56°

Average low41°

Average precipitation0.11 in

Chance of precipitation27%

Record high75° (1987)

Record low17° (1991)

Wed, 0456° / 42°

0.09

56 °

Erwin, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high56°

Average low42°

Average precipitation0.09 in

Chance of precipitation25%

Record high76° (1978)

Record low15° (1991)

Thu, 0555° / 41°

0.14

55 °

Erwin, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high55°

Average low41°

Average precipitation0.14 in

Chance of precipitation32%

Record high75° (1978)

Record low21° (1991)

Fri, 0655° / 40°

0.11

55 °

Erwin, Friday, 6 November

Climate normal for this date — 60-year average.

Average high55°

Average low40°

Average precipitation0.11 in

Chance of precipitation25%

Record high72° (2020)

Record low24° (1991)

Sat, 0755° / 40°

0.03

55 °

Erwin, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high55°

Average low40°

Average precipitation0.03 in

Chance of precipitation13%

Record high72° (1966)

Record low13° (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 Erwin, 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 Erwin, 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.