Monthly outlook for Illco, WY: average high 57.8°, average low 42°. That is 5° above the climate normal for October. Precipitation is expected on 1 day (about 0.2 inches), against a normal of 3 days and 0.7 inches. The warmest day looks like 8 November (68.9°), the coolest 25 October (32.8°).
57.8°/42°
Average high / low
+5°
Above normal
1 / 3
Wet days / normal
0.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
24 October – 2 November
55.3°
50.1°
+2.9°
3 November – 12 November
62°
45.6°
+9.1°
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, 2552° / 33°0
52 °
Illco, Sunday, 25 October
Mostly clear. High 52°, low 33°.
Pressure30.24 inHg
Wind4.2 mph N
Humidity52%
Visibility6.2 mi
Dew point28°
Mon, 2655° / 39°0.21
55 °
Illco, Monday, 26 October
Rain. High 55°, low 39°.
Pressure30.15 inHg
Wind8.3 mph S
Humidity71%
Visibility6.2 mi
Dew point39°
Tue, 2752° / 38°0
52 °
Illco, Tuesday, 27 October
Mostly clear. High 52°, low 38°.
Pressure29.83 inHg
Wind28.6 mph W
Humidity47%
Visibility6.2 mi
Dew point19°
Wed, 2857° / 37°0.01
57 °
Illco, Wednesday, 28 October
Light rain. High 57°, low 37°.
Pressure29.97 inHg
Wind13.7 mph W
Humidity44%
Visibility6.2 mi
Dew point30°
Thu, 2963° / 38°0
63 °
Illco, Thursday, 29 October
Overcast. High 63°, low 38°.
Pressure29.91 inHg
Wind17.9 mph SW
Humidity39%
Visibility—
Dew point31°
Fri, 3060° / 38°0
60 °
Illco, Friday, 30 October
Overcast. High 60°, low 38°.
Pressure29.91 inHg
Wind15.3 mph SW
Humidity49%
Visibility—
Dew point32°
Sat, 3159° / 47°0.02
59 °
Illco, Saturday, 31 October
Light rain. High 59°, low 47°.
Pressure29.77 inHg
Wind24.1 mph W
Humidity37%
Visibility—
Dew point30°
Sun, 0158° / 45°0
58 °
Illco, Sunday, 1 November
Overcast. High 58°, low 45°.
Pressure29.97 inHg
Wind25.3 mph SW
Humidity40%
Visibility—
Dew point29°
Mon, 0253° / 40°0
53 °
Illco, Monday, 2 November
Overcast. High 53°, low 40°.
Pressure30.15 inHg
Wind11 mph S
Humidity40%
Visibility—
Dew point25°
Tue, 0358° / 40°0
58 °
Illco, Tuesday, 3 November
Clear. High 58°, low 40°.
Pressure29.88 inHg
Wind27.6 mph SW
Humidity20%
Visibility—
Dew point13°
Wed, 0454° / 40°0
54 °
Illco, Wednesday, 4 November
Partly cloudy. High 54°, low 40°.
Pressure29.91 inHg
Wind25.4 mph W
Humidity26%
Visibility—
Dew point16°
Thu, 0562° / 47°0
62 °
Illco, Thursday, 5 November
Overcast. High 62°, low 47°.
Pressure29.80 inHg
Wind29.7 mph SW
Humidity28%
Visibility—
Dew point24°
Fri, 0664° / 54°0
64 °
Illco, Friday, 6 November
Overcast. High 64°, low 54°.
Pressure29.77 inHg
Wind33.1 mph SW
Humidity29%
Visibility—
Dew point27°
Sat, 0765° / 54°0
65 °
Illco, Saturday, 7 November
Overcast. High 65°, low 54°.
Pressure29.83 inHg
Wind29.4 mph SW
Humidity34%
Visibility—
Dew point33°
Sun, 0869° / 49°0
69 °
Illco, Sunday, 8 November
Clear. High 69°, low 49°.
Pressure30.09 inHg
Wind15.8 mph SW
Humidity34%
Visibility—
Dew point31°
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.