As of 06:58 MDT

Weather in Illco, WY

47°Current weather

Illco, Sunday, 18 October, 06:58

Clear. Feels like 42°. High 70°, low 46°.

Pressure30.12 inHg
Wind13.8 mph SW
Humidity51%
Visibility6.2 mi
Dew point30°

Monthly outlook for Illco, WY: average high 63.5°, average low 43.9°. That is 6.2° above the climate normal for October. Precipitation is expected on 2 days (about 0.6 inches), against a normal of 3 days and 0.7 inches. The warmest day looks like 19 October (72.2°), the coolest 24 October (34.5°).

63.5°/43.9°
Average high / low
+6.2°
Above normal
2 / 3
Wet days / normal
0.6 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
18 October – 27 October64°54.9°+5°
28 October – 6 November62.7°47.6°+8.4°
7 November – 16 Novemberat normal44°—

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).

Mon, 1972° / 42°0Clear
72 °Clear

Illco, Monday, 19 October

Clear. High 72°, low 42°.

Pressure30.03 inHg
Wind12.3 mph SW
Humidity46%
Visibility6.2 mi
Dew point40°
Tue, 2068° / 45°0Clear
68 °Clear

Illco, Tuesday, 20 October

Clear. High 68°, low 45°.

Pressure30.00 inHg
Wind11.7 mph SW
Humidity50%
Visibility6.2 mi
Dew point44°
Wed, 2167° / 42°0Clear
67 °Clear

Illco, Wednesday, 21 October

Clear. High 67°, low 42°.

Pressure30.15 inHg
Wind5.3 mph S
Humidity51%
Visibility6.2 mi
Dew point42°
Thu, 2268° / 46°0Overcast
68 °Overcast

Illco, Thursday, 22 October

Overcast. High 68°, low 46°.

Pressure29.91 inHg
Wind20.7 mph SW
Humidity44%
Visibility—
Dew point42°
Fri, 2365° / 43°0.09Light rain
65 °Light rain

Illco, Friday, 23 October

Light rain. High 65°, low 43°.

Pressure29.65 inHg
Wind20.8 mph SW
Humidity40%
Visibility—
Dew point38°
Sat, 2445° / 34°0.47Snow
45 °Snow

Illco, Saturday, 24 October

Snow. High 45°, low 34°.

Pressure30.45 inHg
Wind15.1 mph N
Humidity73%
Visibility—
Dew point31°
Sun, 2561° / 39°0Clear
61 °Clear

Illco, Sunday, 25 October

Clear. High 61°, low 39°.

Pressure30.18 inHg
Wind18.8 mph SW
Humidity35%
Visibility—
Dew point24°
Mon, 2659° / 43°0Clear
59 °Clear

Illco, Monday, 26 October

Clear. High 59°, low 43°.

Pressure30.00 inHg
Wind10.2 mph SW
Humidity31%
Visibility—
Dew point24°
Tue, 2765° / 44°0Mostly clear
65 °Mostly clear

Illco, Tuesday, 27 October

Mostly clear. High 65°, low 44°.

Pressure29.83 inHg
Wind22.2 mph SW
Humidity27%
Visibility—
Dew point24°
Wed, 2861° / 43°0Clear
61 °Clear

Illco, Wednesday, 28 October

Clear. High 61°, low 43°.

Pressure29.83 inHg
Wind17.6 mph W
Humidity25%
Visibility—
Dew point21°
Thu, 2961° / 44°0Mostly clear
61 °Mostly clear

Illco, Thursday, 29 October

Mostly clear. High 61°, low 44°.

Pressure29.77 inHg
Wind18.9 mph SW
Humidity31%
Visibility—
Dew point24°
Fri, 3060° / 44°0Overcast
60 °Overcast

Illco, Friday, 30 October

Overcast. High 60°, low 44°.

Pressure29.68 inHg
Wind16.6 mph SW
Humidity25%
Visibility—
Dew point20°
Sat, 3163° / 45°0Overcast
63 °Overcast

Illco, Saturday, 31 October

Overcast. High 63°, low 45°.

Pressure29.68 inHg
Wind23.5 mph SW
Humidity22%
Visibility—
Dew point19°
Sun, 0166° / 51°0Clear
66 °Clear

Illco, Sunday, 1 November

Clear. High 66°, low 51°.

Pressure29.91 inHg
Wind24.7 mph SW
Humidity15%
Visibility—
Dew point13°
Mon, 0265° / 50°0Overcast
65 °Overcast

Illco, Monday, 2 November

Overcast. High 65°, low 50°.

Pressure30.00 inHg
Wind18.6 mph SW
Humidity18%
Visibility—
Dew point15°
From day 17 onward the outlook is built from 60-year climate statistics
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)
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)

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.