Monthly outlook for Altamont, WY: average high 52.7°, average low 35.9°. That is 2.2° above the climate normal for October. Precipitation is expected on 6 days (about 0.7 inches), against a normal of 4 days and 0.8 inches. The warmest day looks like 21 October (61.1°), the coolest 25 October (30.6°).
52.7°/35.9°
Average high / low
+2.2°
Above normal
6 / 4
Wet days / normal
0.7 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
19 October – 28 October
55.2°
51.1°
+2.3°
29 October – 7 November
48.6°
44.5°
+2.2°
8 November – 17 November
at normal
39.9°
—
October records over 66 years
79°4 October 2024All-time high
-11.9°30 October 2019All-time low
Climate normals and records are computed from the nearest reference point — Evanston (10 mi).
Tue, 2061° / 35°0.01
61 °
Altamont, Tuesday, 20 October
Light rain. High 61°, low 35°.
Pressure30.09 inHg
Wind2.2 mph NW
Humidity51%
Visibility6.2 mi
Dew point38°
Wed, 2161° / 37°0.07
61 °
Altamont, Wednesday, 21 October
Light rain. High 61°, low 37°.
Pressure30.06 inHg
Wind1.2 mph SE
Humidity48%
Visibility6.2 mi
Dew point40°
Thu, 2260° / 42°0.02
60 °
Altamont, Thursday, 22 October
Light rain. High 60°, low 42°.
Pressure30.00 inHg
Wind11.8 mph NE
Humidity65%
Visibility6.2 mi
Dew point44°
Fri, 2345° / 37°0.17
45 °
Altamont, Friday, 23 October
Rain. High 45°, low 37°.
Pressure29.88 inHg
Wind24.2 mph SW
Humidity70%
Visibility6.2 mi
Dew point35°
Sat, 2445° / 36°0
45 °
Altamont, Saturday, 24 October
Overcast. High 45°, low 36°.
Pressure30.21 inHg
Wind8.4 mph SW
Humidity70%
Visibility—
Dew point31°
Sun, 2555° / 31°0
55 °
Altamont, Sunday, 25 October
Clear. High 55°, low 31°.
Pressure30.30 inHg
Wind8 mph W
Humidity23%
Visibility—
Dew point11°
Mon, 2657° / 36°0
57 °
Altamont, Monday, 26 October
Clear. High 57°, low 36°.
Pressure30.06 inHg
Wind14.6 mph W
Humidity20%
Visibility—
Dew point11°
Tue, 2753° / 36°0
53 °
Altamont, Tuesday, 27 October
Clear. High 53°, low 36°.
Pressure30.15 inHg
Wind10.6 mph NE
Humidity24%
Visibility—
Dew point13°
Wed, 2856° / 33°0
56 °
Altamont, Wednesday, 28 October
Overcast. High 56°, low 33°.
Pressure30.09 inHg
Wind6.9 mph S
Humidity27%
Visibility—
Dew point16°
Thu, 2955° / 39°0
55 °
Altamont, Thursday, 29 October
Overcast. High 55°, low 39°.
Pressure29.91 inHg
Wind14.1 mph W
Humidity33%
Visibility—
Dew point24°
Fri, 3046° / 37°0.1
46 °
Altamont, Friday, 30 October
Light rain. High 46°, low 37°.
Pressure29.83 inHg
Wind10.2 mph W
Humidity62%
Visibility—
Dew point33°
Sat, 3151° / 35°0.02
51 °
Altamont, Saturday, 31 October
Light rain. High 51°, low 35°.
Pressure29.94 inHg
Wind15.2 mph W
Humidity45%
Visibility—
Dew point27°
Sun, 0156° / 35°0.17
56 °
Altamont, Sunday, 1 November
Rain. High 56°, low 35°.
Pressure30.00 inHg
Wind13.5 mph W
Humidity41%
Visibility—
Dew point26°
Mon, 0241° / 36°0.08
41 °
Altamont, Monday, 2 November
Light rain. High 41°, low 36°.
Pressure30.09 inHg
Wind20.3 mph SW
Humidity94%
Visibility—
Dew point37°
Tue, 0343° / 34°0.11
43 °
Altamont, Tuesday, 3 November
Snow. High 43°, low 34°.
Pressure30.06 inHg
Wind10.5 mph W
Humidity67%
Visibility—
Dew point31°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 0445° / 24°0.02
45 °
Altamont, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high45°
Average low24°
Average precipitation0.02 in
Chance of precipitation15%
Record high62° (2020)
Record low-5° (1994)
Thu, 0545° / 26°0.04
45 °
Altamont, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high45°
Average low26°
Average precipitation0.04 in
Chance of precipitation28%
Record high63° (1980)
Record low-1° (1961)
Fri, 0644° / 26°0.03
44 °
Altamont, Friday, 6 November
Climate normal for this date — 60-year average.
Average high44°
Average low26°
Average precipitation0.03 in
Chance of precipitation22%
Record high64° (1999)
Record low-5° (1996)
Sat, 0744° / 25°0.05
44 °
Altamont, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high44°
Average low25°
Average precipitation0.05 in
Chance of precipitation20%
Record high64° (1999)
Record low-6° (2003)
Sun, 0842° / 24°0.07
42 °
Altamont, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high42°
Average low24°
Average precipitation0.07 in
Chance of precipitation35%
Record high59° (2006)
Record low2° (2000)
Mon, 0942° / 23°0.09
42 °
Altamont, Monday, 9 November
Climate normal for this date — 60-year average.
Average high42°
Average low23°
Average precipitation0.09 in
Chance of precipitation38%
Record high60° (2016)
Record low-3° (1966)
Tue, 1040° / 22°0.06
40 °
Altamont, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high40°
Average low22°
Average precipitation0.06 in
Chance of precipitation37%
Record high59° (2005)
Record low3° (1985)
Wed, 1140° / 22°0.04
40 °
Altamont, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high40°
Average low22°
Average precipitation0.04 in
Chance of precipitation20%
Record high60° (1999)
Record low-6° (2000)
Thu, 1240° / 21°0.07
40 °
Altamont, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high40°
Average low21°
Average precipitation0.07 in
Chance of precipitation25%
Record high63° (1999)
Record low-4° (2000)
Fri, 1340° / 22°0.04
40 °
Altamont, Friday, 13 November
Climate normal for this date — 60-year average.
Average high40°
Average low22°
Average precipitation0.04 in
Chance of precipitation32%
Record high61° (1999)
Record low-2° (1972)
Sat, 1439° / 21°0.07
39 °
Altamont, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high39°
Average low21°
Average precipitation0.07 in
Chance of precipitation25%
Record high61° (1999)
Record low-8° (1978)
Sun, 1539° / 19°0.02
39 °
Altamont, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high39°
Average low19°
Average precipitation0.02 in
Chance of precipitation12%
Record high63° (1999)
Record low-11° (1978)
Mon, 1639° / 20°0.04
39 °
Altamont, Monday, 16 November
Climate normal for this date — 60-year average.
Average high39°
Average low20°
Average precipitation0.04 in
Chance of precipitation23%
Record high61° (1999)
Record low-5° (2014)
Tue, 1738° / 19°0.06
38 °
Altamont, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high38°
Average low19°
Average precipitation0.06 in
Chance of precipitation35%
Record high57° (1999)
Record low-5° (2000)
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 Altamont, 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 Altamont, 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.