Monthly outlook for Winchester, WY: average high 56.9°, average low 37.7°. That is 2.2° above the climate normal for October. Precipitation is expected on 2 days (about 0.5 inches), against a normal of 3 days and 0.6 inches. The warmest day looks like 22 October (75.3°), the coolest 27 October (30°).
56.9°/37.7°
Average high / low
+2.2°
Above normal
2 / 3
Wet days / normal
0.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
20 October – 29 October
57.5°
55.4°
+1.1°
30 October – 8 November
55.9°
48.8°
+4°
9 November – 18 November
at normal
43.6°
—
October records over 66 years
87.1°1 October 2011All-time high
-4.4°26 October 2020All-time low
Climate normals and records are computed from the nearest reference point — Airport Road (10 mi).
Wed, 2174° / 40°0
74 °
Winchester, Wednesday, 21 October
Clear. High 74°, low 40°.
Pressure30.09 inHg
Wind4 mph SE
Humidity34%
Visibility6.2 mi
Dew point35°
Thu, 2275° / 46°0
75 °
Winchester, Thursday, 22 October
Overcast. High 75°, low 46°.
Pressure29.94 inHg
Wind4.5 mph S
Humidity41%
Visibility6.2 mi
Dew point42°
Fri, 2373° / 43°0.15
73 °
Winchester, Friday, 23 October
Rain. High 73°, low 43°.
Pressure29.59 inHg
Wind15.9 mph S
Humidity35%
Visibility6.2 mi
Dew point43°
Sat, 2446° / 40°0.35
46 °
Winchester, Saturday, 24 October
Rain. High 46°, low 40°.
Pressure30.45 inHg
Wind5.4 mph NW
Humidity67%
Visibility6.2 mi
Dew point30°
Sun, 2554° / 36°0
54 °
Winchester, Sunday, 25 October
Clear. High 54°, low 36°.
Pressure30.30 inHg
Wind11.5 mph NW
Humidity58%
Visibility—
Dew point33°
Mon, 2638° / 31°0.03
38 °
Winchester, Monday, 26 October
Light snow. High 38°, low 31°.
Pressure30.62 inHg
Wind11.4 mph NW
Humidity74%
Visibility—
Dew point26°
Tue, 2749° / 30°0
49 °
Winchester, Tuesday, 27 October
Overcast. High 49°, low 30°.
Pressure30.30 inHg
Wind3.9 mph N
Humidity47%
Visibility—
Dew point21°
Wed, 2845° / 35°0
45 °
Winchester, Wednesday, 28 October
Mostly clear. High 45°, low 35°.
Pressure30.42 inHg
Wind5.1 mph N
Humidity41%
Visibility—
Dew point19°
Thu, 2952° / 34°0
52 °
Winchester, Thursday, 29 October
Overcast. High 52°, low 34°.
Pressure30.03 inHg
Wind3 mph NE
Humidity37%
Visibility—
Dew point19°
Fri, 3059° / 41°0
59 °
Winchester, Friday, 30 October
Overcast. High 59°, low 41°.
Pressure29.65 inHg
Wind7 mph N
Humidity24%
Visibility—
Dew point17°
Sat, 3155° / 41°0
55 °
Winchester, Saturday, 31 October
Clear. High 55°, low 41°.
Pressure29.50 inHg
Wind8.5 mph NE
Humidity47%
Visibility—
Dew point29°
Sun, 0157° / 38°0
57 °
Winchester, Sunday, 1 November
Clear. High 57°, low 38°.
Pressure29.56 inHg
Wind19.1 mph NW
Humidity30%
Visibility—
Dew point20°
Mon, 0251° / 33°0
51 °
Winchester, Monday, 2 November
Mostly clear. High 51°, low 33°.
Pressure30.24 inHg
Wind5.6 mph N
Humidity47%
Visibility—
Dew point24°
Tue, 0360° / 40°0
60 °
Winchester, Tuesday, 3 November
Overcast. High 60°, low 40°.
Pressure30.12 inHg
Wind7.9 mph N
Humidity25%
Visibility—
Dew point17°
Wed, 0453° / 35°0
53 °
Winchester, Wednesday, 4 November
Clear. High 53°, low 35°.
Pressure30.18 inHg
Wind5.3 mph NE
Humidity40%
Visibility—
Dew point21°
From day 17 onward the outlook is built from 60-year climate statistics
Thu, 0549° / 29°0.03
49 °
Winchester, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high49°
Average low29°
Average precipitation0.03 in
Chance of precipitation15%
Record high68° (1977)
Record low-4° (1973)
Fri, 0649° / 28°0.05
49 °
Winchester, Friday, 6 November
Climate normal for this date — 60-year average.
Average high49°
Average low28°
Average precipitation0.05 in
Chance of precipitation17%
Record high71° (2010)
Record low2° (1971)
Sat, 0749° / 28°0.02
49 °
Winchester, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high49°
Average low28°
Average precipitation0.02 in
Chance of precipitation15%
Record high68° (2012)
Record low3° (1990)
Sun, 0847° / 27°0.05
47 °
Winchester, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high47°
Average low27°
Average precipitation0.05 in
Chance of precipitation23%
Record high69° (1999)
Record low4° (1986)
Mon, 0945° / 26°0.05
45 °
Winchester, Monday, 9 November
Climate normal for this date — 60-year average.
Average high45°
Average low26°
Average precipitation0.05 in
Chance of precipitation23%
Record high64° (2016)
Record low2° (1960)
Tue, 1044° / 25°0.04
44 °
Winchester, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high44°
Average low25°
Average precipitation0.04 in
Chance of precipitation22%
Record high65° (2007)
Record low-10° (1986)
Wed, 1143° / 24°0.02
43 °
Winchester, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high43°
Average low24°
Average precipitation0.02 in
Chance of precipitation20%
Record high64° (1999)
Record low-3° (1986)
Thu, 1244° / 24°0.03
44 °
Winchester, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high44°
Average low24°
Average precipitation0.03 in
Chance of precipitation18%
Record high67° (1999)
Record low-10° (2014)
Fri, 1344° / 25°0.03
44 °
Winchester, Friday, 13 November
Climate normal for this date — 60-year average.
Average high44°
Average low25°
Average precipitation0.03 in
Chance of precipitation22%
Record high65° (2025)
Record low-11° (2014)
Sat, 1444° / 25°0.04
44 °
Winchester, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high44°
Average low25°
Average precipitation0.04 in
Chance of precipitation12%
Record high69° (2025)
Record low-2° (1978)
Sun, 1543° / 24°0.02
43 °
Winchester, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high43°
Average low24°
Average precipitation0.02 in
Chance of precipitation12%
Record high67° (2016)
Record low-10° (2014)
Mon, 1644° / 25°0.01
44 °
Winchester, Monday, 16 November
Climate normal for this date — 60-year average.
Average high44°
Average low25°
Average precipitation0.01 in
Chance of precipitation13%
Record high64° (2025)
Record low-14° (2014)
Tue, 1743° / 25°0.04
43 °
Winchester, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high43°
Average low25°
Average precipitation0.04 in
Chance of precipitation23%
Record high66° (1999)
Record low-7° (2014)
Wed, 1842° / 24°0.05
42 °
Winchester, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high42°
Average low24°
Average precipitation0.05 in
Chance of precipitation22%
Record high66° (2020)
Record low0° (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 Winchester, 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 Winchester, 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.