As of 01:28 MDT

Weather in Illco, WY

41°Current weather

Illco, Wednesday, 21 October, 01:28

Clear. Feels like 37°. High 74°, low 41°.

Pressure30.21 inHg
Wind5.7 mph W
Humidity75%
Visibility6.2 mi
Dew point34°

Monthly outlook for Illco, WY: average high 59.1°, average low 41.8°. That is 4.8° above the climate normal for October. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 3 days and 0.7 inches. The warmest day looks like 21 October (73.5°), the coolest 28 October (32.8°).

59.1°/41.8°
Average high / low
+4.8°
Above normal
0 / 3
Wet days / normal
0.0 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
21 October – 30 October56.4°52.8°+2°
31 October – 9 November63.6°46.5°+9.5°
10 November – 19 Novemberat normal42.5°—

October records over 66 years

83.7°4 October 2024All-time high
-14.1°31 October 1991All-time low

Climate normals and records are computed from the nearest reference point — Bar Nunn (10 mi).

Thu, 2271° / 47°0Partly cloudy
71 °Partly cloudy

Illco, Thursday, 22 October

Partly cloudy. High 71°, low 47°.

Pressure29.97 inHg
Wind14 mph SW
Humidity50%
Visibility6.2 mi
Dew point47°
Fri, 2367° / 49°0Clear
67 °Clear

Illco, Friday, 23 October

Clear. High 67°, low 49°.

Pressure29.71 inHg
Wind28.4 mph SW
Humidity32%
Visibility6.2 mi
Dew point35°
Sat, 2444° / 36°0.02Light rain
44 °Light rain

Illco, Saturday, 24 October

Light rain. High 44°, low 36°.

Pressure30.42 inHg
Wind9 mph NE
Humidity78%
Visibility6.2 mi
Dew point31°
Sun, 2551° / 37°0Overcast
51 °Overcast

Illco, Sunday, 25 October

Overcast. High 51°, low 37°.

Pressure30.24 inHg
Wind10.6 mph NE
Humidity59%
Visibility—
Dew point32°
Mon, 2642° / 35°0.02Light rain
42 °Light rain

Illco, Monday, 26 October

Light rain. High 42°, low 35°.

Pressure30.50 inHg
Wind15.5 mph N
Humidity67%
Visibility—
Dew point30°
Tue, 2755° / 35°0Clear
55 °Clear

Illco, Tuesday, 27 October

Clear. High 55°, low 35°.

Pressure30.18 inHg
Wind13.9 mph W
Humidity53%
Visibility—
Dew point30°
Wed, 2846° / 33°0Partly cloudy
46 °Partly cloudy

Illco, Wednesday, 28 October

Partly cloudy. High 46°, low 33°.

Pressure30.39 inHg
Wind7.7 mph N
Humidity42%
Visibility—
Dew point19°
Thu, 2954° / 38°0Partly cloudy
54 °Partly cloudy

Illco, Thursday, 29 October

Partly cloudy. High 54°, low 38°.

Pressure30.06 inHg
Wind8.6 mph SE
Humidity36%
Visibility—
Dew point22°
Fri, 3060° / 40°0Clear
60 °Clear

Illco, Friday, 30 October

Clear. High 60°, low 40°.

Pressure29.68 inHg
Wind20.1 mph W
Humidity25%
Visibility—
Dew point19°
Sat, 3155° / 37°0Mostly clear
55 °Mostly clear

Illco, Saturday, 31 October

Mostly clear. High 55°, low 37°.

Pressure29.59 inHg
Wind14.1 mph W
Humidity26%
Visibility—
Dew point17°
Sun, 0160° / 41°0Overcast
60 °Overcast

Illco, Sunday, 1 November

Overcast. High 60°, low 41°.

Pressure29.91 inHg
Wind13.9 mph SW
Humidity22%
Visibility—
Dew point15°
Mon, 0264° / 45°0Overcast
64 °Overcast

Illco, Monday, 2 November

Overcast. High 64°, low 45°.

Pressure30.12 inHg
Wind15.6 mph SW
Humidity29%
Visibility—
Dew point24°
Tue, 0372° / 52°0Clear
72 °Clear

Illco, Tuesday, 3 November

Clear. High 72°, low 52°.

Pressure30.12 inHg
Wind17.3 mph SW
Humidity22%
Visibility—
Dew point25°
Wed, 0472° / 50°0Clear
72 °Clear

Illco, Wednesday, 4 November

Clear. High 72°, low 50°.

Pressure30.06 inHg
Wind16.4 mph W
Humidity23%
Visibility—
Dew point25°
Thu, 0559° / 53°0Overcast
59 °Overcast

Illco, Thursday, 5 November

Overcast. High 59°, low 53°.

Pressure30.27 inHg
Wind11 mph NE
Humidity42%
Visibility—
Dew point35°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 0647° / 28°0.04Climate normal
47 °Climate normal

Illco, Friday, 6 November

Climate normal for this date — 60-year average.

Average high47°
Average low28°
Average precipitation0.04 in
Chance of precipitation25%
Record high68° (2020)
Record low-7° (2003)
Sat, 0747° / 27°0.03Climate normal
47 °Climate normal

Illco, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high47°
Average low27°
Average precipitation0.03 in
Chance of precipitation20%
Record high69° (1999)
Record low-10° (2003)
Sun, 0846° / 26°0.06Climate normal
46 °Climate normal

Illco, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high46°
Average low26°
Average precipitation0.06 in
Chance of precipitation20%
Record high68° (1999)
Record low-4° (2003)
Mon, 0945° / 25°0.04Climate normal
45 °Climate normal

Illco, Monday, 9 November

Climate normal for this date — 60-year average.

Average high45°
Average low25°
Average precipitation0.04 in
Chance of precipitation22%
Record high65° (2016)
Record low-6° (1966)
Tue, 1044° / 24°0.05Climate normal
44 °Climate normal

Illco, Tuesday, 10 November

Climate normal for this date — 60-year average.

Average high44°
Average low24°
Average precipitation0.05 in
Chance of precipitation22%
Record high66° (2005)
Record low-14° (1986)
Wed, 1142° / 24°0.03Climate normal
42 °Climate normal

Illco, Wednesday, 11 November

Climate normal for this date — 60-year average.

Average high42°
Average low24°
Average precipitation0.03 in
Chance of precipitation15%
Record high65° (2005)
Record low-7° (2014)
Thu, 1244° / 24°0.03Climate normal
44 °Climate normal

Illco, Thursday, 12 November

Climate normal for this date — 60-year average.

Average high44°
Average low24°
Average precipitation0.03 in
Chance of precipitation17%
Record high67° (1999)
Record low-16° (2000)
Fri, 1344° / 25°0.05Climate normal
44 °Climate normal

Illco, Friday, 13 November

Climate normal for this date — 60-year average.

Average high44°
Average low25°
Average precipitation0.05 in
Chance of precipitation23%
Record high66° (1999)
Record low-15° (1986)
Sat, 1443° / 25°0.03Climate normal
43 °Climate normal

Illco, Saturday, 14 November

Climate normal for this date — 60-year average.

Average high43°
Average low25°
Average precipitation0.03 in
Chance of precipitation25%
Record high69° (2025)
Record low-8° (2000)
Sun, 1542° / 23°0.04Climate normal
42 °Climate normal

Illco, Sunday, 15 November

Climate normal for this date — 60-year average.

Average high42°
Average low23°
Average precipitation0.04 in
Chance of precipitation15%
Record high67° (2016)
Record low-14° (2014)
Mon, 1643° / 24°0.02Climate normal
43 °Climate normal

Illco, Monday, 16 November

Climate normal for this date — 60-year average.

Average high43°
Average low24°
Average precipitation0.02 in
Chance of precipitation20%
Record high65° (2025)
Record low-23° (2014)
Tue, 1742° / 24°0.03Climate normal
42 °Climate normal

Illco, Tuesday, 17 November

Climate normal for this date — 60-year average.

Average high42°
Average low24°
Average precipitation0.03 in
Chance of precipitation18%
Record high68° (1999)
Record low-7° (1980)
Wed, 1842° / 24°0.04Climate normal
42 °Climate normal

Illco, Wednesday, 18 November

Climate normal for this date — 60-year average.

Average high42°
Average low24°
Average precipitation0.04 in
Chance of precipitation22%
Record high63° (2020)
Record low-9° (2022)
Thu, 1940° / 22°0.02Climate normal
40 °Climate normal

Illco, Thursday, 19 November

Climate normal for this date — 60-year average.

Average high40°
Average low22°
Average precipitation0.02 in
Chance of precipitation13%
Record high65° (2007)
Record low-5° (1985)

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 Illco, WY 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 Illco, WY 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.