Monthly outlook for Illco, WY: average high 57°, average low 40.6°. That is 4.5° above the climate normal for October. Precipitation is expected on 1 day (about 0.1 inches), against a normal of 3 days and 0.7 inches. The warmest day looks like 30 October (66.7°), the coolest 24 October (33.4°).
57°/40.6°
Average high / low
+4.5°
Above normal
1 / 3
Wet days / normal
0.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
24 October – 2 November
55.6°
50.1°
+3°
3 November – 12 November
59.3°
45.6°
+7.7°
13 November – 22 November
at normal
41.5°
—
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).
Sun, 2554° / 34°0
54 °
Illco, Sunday, 25 October
Clear. High 54°, low 34°.
Pressure30.21 inHg
Wind2.3 mph NE
Humidity51%
Visibility6.2 mi
Dew point29°
Mon, 2658° / 41°0.06
58 °
Illco, Monday, 26 October
Light rain. High 58°, low 41°.
Pressure30.09 inHg
Wind7.5 mph SW
Humidity62%
Visibility6.2 mi
Dew point37°
Tue, 2753° / 42°0
53 °
Illco, Tuesday, 27 October
Clear. High 53°, low 42°.
Pressure29.91 inHg
Wind24.5 mph W
Humidity46%
Visibility6.2 mi
Dew point16°
Wed, 2856° / 38°0
56 °
Illco, Wednesday, 28 October
Clear. High 56°, low 38°.
Pressure30.00 inHg
Wind13.8 mph W
Humidity46%
Visibility6.2 mi
Dew point29°
Thu, 2964° / 40°0
64 °
Illco, Thursday, 29 October
Overcast. High 64°, low 40°.
Pressure29.94 inHg
Wind17.6 mph SW
Humidity38%
Visibility—
Dew point30°
Fri, 3067° / 46°0
67 °
Illco, Friday, 30 October
Overcast. High 67°, low 46°.
Pressure29.74 inHg
Wind19.8 mph SW
Humidity23%
Visibility—
Dew point23°
Sat, 3155° / 46°0.02
55 °
Illco, Saturday, 31 October
Light rain. High 55°, low 46°.
Pressure29.80 inHg
Wind19.1 mph SW
Humidity51%
Visibility—
Dew point34°
Sun, 0147° / 35°0
47 °
Illco, Sunday, 1 November
Clear. High 47°, low 35°.
Pressure30.12 inHg
Wind24.5 mph NW
Humidity21%
Visibility—
Dew point6°
Mon, 0258° / 35°0
58 °
Illco, Monday, 2 November
Clear. High 58°, low 35°.
Pressure30.42 inHg
Wind18.8 mph SW
Humidity28%
Visibility—
Dew point17°
Tue, 0360° / 42°0.01
60 °
Illco, Tuesday, 3 November
Light rain. High 60°, low 42°.
Pressure29.97 inHg
Wind21 mph SW
Humidity51%
Visibility—
Dew point34°
Wed, 0462° / 45°0
62 °
Illco, Wednesday, 4 November
Partly cloudy. High 62°, low 45°.
Pressure29.71 inHg
Wind23.6 mph SW
Humidity43%
Visibility—
Dew point33°
Thu, 0560° / 46°0
60 °
Illco, Thursday, 5 November
Overcast. High 60°, low 46°.
Pressure29.77 inHg
Wind28.1 mph SW
Humidity37%
Visibility—
Dew point30°
Fri, 0659° / 47°0.02
59 °
Illco, Friday, 6 November
Light rain. High 59°, low 47°.
Pressure29.62 inHg
Wind28.1 mph SW
Humidity41%
Visibility—
Dew point33°
Sat, 0753° / 41°0
53 °
Illco, Saturday, 7 November
Clear. High 53°, low 41°.
Pressure30.09 inHg
Wind20 mph W
Humidity30%
Visibility—
Dew point20°
Sun, 0863° / 38°0
63 °
Illco, Sunday, 8 November
Clear. High 63°, low 38°.
Pressure30.03 inHg
Wind25.5 mph SW
Humidity27%
Visibility—
Dew point20°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 0945° / 25°0.04
45 °
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°0.05
44 °
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°0.03
42 °
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°0.03
44 °
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°0.05
44 °
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°0.03
43 °
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°0.04
42 °
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°0.02
43 °
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°0.03
42 °
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°0.04
42 °
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°0.02
40 °
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)
Fri, 2040° / 22°0.03
40 °
Illco, Friday, 20 November
Climate normal for this date — 60-year average.
Average high40°
Average low22°
Average precipitation0.03 in
Chance of precipitation12%
Record high56° (1990)
Record low-14° (1977)
Sat, 2140° / 22°0.04
40 °
Illco, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high40°
Average low22°
Average precipitation0.04 in
Chance of precipitation17%
Record high58° (2012)
Record low-21° (1977)
Sun, 2239° / 23°0.02
39 °
Illco, Sunday, 22 November
Climate normal for this date — 60-year average.
Average high39°
Average low23°
Average precipitation0.02 in
Chance of precipitation18%
Record high57° (2017)
Record low-14° (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.