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As of 23:00 MDT

Weather in Illco, WY

33°Current weather

Illco, Thursday, 15 October, 23:00

Clear. Feels like 33°. High 49°, low 33°.

Pressure30.80 inHg
Wind2 mph N
Humidity67%
Visibility6.2 mi
Dew point25°

Monthly outlook for Illco, WY: average high 53.5°, average low 36.2°. That is 0.4° below the climate normal for October. Precipitation is expected on 4 days (about 1.3 inches), against a normal of 3 days and 0.8 inches. The warmest day looks like 22 October (69.3°), the coolest 25 October (21.9°).

53.5°/36.2°
Average high / low
−0.4°
Below normal
4 / 3
Wet days / normal
1.3 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
15 October – 24 October58.6°56°+1.5°
25 October – 3 November44.9°49.2°-2.4°
4 November – 13 Novemberat normal45.4°—

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).

Fri, 1657° / 27°0Clear
57 °Clear

Illco, Friday, 16 October

Clear. High 57°, low 27°.

Pressure30.59 inHg
Wind14.7 mph SW
Humidity50%
Visibility6.2 mi
Dew point30°
Sat, 1766° / 39°0Clear
66 °Clear

Illco, Saturday, 17 October

Clear. High 66°, low 39°.

Pressure30.18 inHg
Wind19.2 mph SW
Humidity40%
Visibility6.2 mi
Dew point34°
Sun, 1861° / 39°0Overcast
61 °Overcast

Illco, Sunday, 18 October

Overcast. High 61°, low 39°.

Pressure30.09 inHg
Wind4.2 mph E
Humidity44%
Visibility6.2 mi
Dew point35°
Mon, 1965° / 42°0Clear
65 °Clear

Illco, Monday, 19 October

Clear. High 65°, low 42°.

Pressure29.97 inHg
Wind16.2 mph SW
Humidity44%
Visibility6.2 mi
Dew point38°
Tue, 2065° / 46°0Clear
65 °Clear

Illco, Tuesday, 20 October

Clear. High 65°, low 46°.

Pressure29.85 inHg
Wind15.9 mph SW
Humidity53%
Visibility—
Dew point42°
Wed, 2167° / 46°0Clear
67 °Clear

Illco, Wednesday, 21 October

Clear. High 67°, low 46°.

Pressure30.00 inHg
Wind8.5 mph W
Humidity49%
Visibility—
Dew point41°
Thu, 2269° / 52°0Light rain
69 °Light rain

Illco, Thursday, 22 October

Light rain. High 69°, low 52°.

Pressure29.80 inHg
Wind16.5 mph W
Humidity35%
Visibility—
Dew point35°
Fri, 2354° / 36°0.6Snow
54 °Snow

Illco, Friday, 23 October

Snow. High 54°, low 36°.

Pressure29.59 inHg
Wind21.6 mph N
Humidity84%
Visibility—
Dew point43°
Sat, 2433° / 29°0.55Snow
33 °Snow

Illco, Saturday, 24 October

Snow. High 33°, low 29°.

Pressure30.45 inHg
Wind12.4 mph NE
Humidity97%
Visibility—
Dew point29°
Sun, 2536° / 22°0Partly cloudy
36 °Partly cloudy

Illco, Sunday, 25 October

Partly cloudy. High 36°, low 22°.

Pressure30.45 inHg
Wind13.4 mph SW
Humidity72%
Visibility—
Dew point23°
Mon, 2638° / 25°0Overcast
38 °Overcast

Illco, Monday, 26 October

Overcast. High 38°, low 25°.

Pressure29.97 inHg
Wind10.8 mph S
Humidity76%
Visibility—
Dew point30°
Tue, 2735° / 31°0.12Light snow
35 °Light snow

Illco, Tuesday, 27 October

Light snow. High 35°, low 31°.

Pressure30.06 inHg
Wind14.2 mph N
Humidity85%
Visibility—
Dew point29°
Wed, 2849° / 31°0Overcast
49 °Overcast

Illco, Wednesday, 28 October

Overcast. High 49°, low 31°.

Pressure29.85 inHg
Wind26 mph SW
Humidity50%
Visibility—
Dew point26°
Thu, 2953° / 40°0Overcast
53 °Overcast

Illco, Thursday, 29 October

Overcast. High 53°, low 40°.

Pressure29.97 inHg
Wind19.4 mph W
Humidity49%
Visibility—
Dew point30°
Fri, 3059° / 42°0Overcast
59 °Overcast

Illco, Friday, 30 October

Overcast. High 59°, low 42°.

Pressure29.91 inHg
Wind24.2 mph SW
Humidity42%
Visibility—
Dew point31°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 3147° / 28°0.05Climate normal
47 °Climate normal

Illco, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high47°
Average low28°
Average precipitation0.05 in
Chance of precipitation25%
Record high67° (2014)
Record low-14° (1991)
Sun, 0147° / 27°0.05Climate normal
47 °Climate normal

Illco, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high47°
Average low27°
Average precipitation0.05 in
Chance of precipitation23%
Record high68° (2014)
Record low-9° (2002)
Mon, 0246° / 26°0.04Climate normal
46 °Climate normal

Illco, Monday, 2 November

Climate normal for this date — 60-year average.

Average high46°
Average low26°
Average precipitation0.04 in
Chance of precipitation20%
Record high68° (2025)
Record low-20° (1991)
Tue, 0346° / 26°0.04Climate normal
46 °Climate normal

Illco, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high46°
Average low26°
Average precipitation0.04 in
Chance of precipitation18%
Record high67° (2015)
Record low-16° (1991)
Wed, 0447° / 26°0.01Climate normal
47 °Climate normal

Illco, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high47°
Average low26°
Average precipitation0.01 in
Chance of precipitation12%
Record high70° (2020)
Record low-2° (2002)
Thu, 0547° / 27°0.03Climate normal
47 °Climate normal

Illco, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high47°
Average low27°
Average precipitation0.03 in
Chance of precipitation17%
Record high68° (2001)
Record low-7° (1967)
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)

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.