Monthly outlook for Altamont, WY: average high 48.1°, average low 32.1°. That is 2.5° above the climate normal for October. Precipitation is expected on 5 days (about 1.2 inches), against a normal of 4 days and 0.8 inches. The warmest day looks like 29 October (55.3°), the coolest 4 November (23.3°).
48.1°/32.1°
Average high / low
+2.5°
Above normal
5 / 4
Wet days / normal
1.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
28 October – 6 November
47.9°
45°
+1.6°
7 November – 16 November
48.4°
40.5°
+4.4°
17 November – 26 November
at normal
35.2°
—
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).
Thu, 2955° / 33°0
55 °
Altamont, Thursday, 29 October
Overcast. High 55°, low 33°.
Pressure30.03 inHg
Wind3.9 mph N
Humidity57%
Visibility6.2 mi
Dew point33°
Fri, 3052° / 33°0.05
52 °
Altamont, Friday, 30 October
Light rain. High 52°, low 33°.
Pressure29.94 inHg
Wind2.3 mph E
Humidity59%
Visibility6.2 mi
Dew point37°
Sat, 3152° / 38°0.02
52 °
Altamont, Saturday, 31 October
Light rain. High 52°, low 38°.
Pressure30.00 inHg
Wind9.9 mph SW
Humidity62%
Visibility6.2 mi
Dew point37°
Sun, 0146° / 40°0.39
46 °
Altamont, Sunday, 1 November
Rain. High 46°, low 40°.
Pressure29.77 inHg
Wind4.4 mph NE
Humidity92%
Visibility3.1 mi
Dew point40°
Mon, 0239° / 34°0.52
39 °
Altamont, Monday, 2 November
Snow. High 39°, low 34°.
Pressure30.12 inHg
Wind9 mph NW
Humidity98%
Visibility—
Dew point35°
Tue, 0338° / 24°0
38 °
Altamont, Tuesday, 3 November
Clear. High 38°, low 24°.
Pressure30.30 inHg
Wind7.2 mph S
Humidity73%
Visibility—
Dew point28°
Wed, 0449° / 23°0
49 °
Altamont, Wednesday, 4 November
Clear. High 49°, low 23°.
Pressure30.06 inHg
Wind8.9 mph NE
Humidity48%
Visibility—
Dew point23°
Thu, 0550° / 30°0
50 °
Altamont, Thursday, 5 November
Overcast. High 50°, low 30°.
Pressure29.88 inHg
Wind7.8 mph W
Humidity42%
Visibility—
Dew point21°
Fri, 0648° / 33°0
48 °
Altamont, Friday, 6 November
Overcast. High 48°, low 33°.
Pressure29.80 inHg
Wind14.4 mph W
Humidity40%
Visibility—
Dew point22°
Sat, 0744° / 34°0.04
44 °
Altamont, Saturday, 7 November
Light rain. High 44°, low 34°.
Pressure29.77 inHg
Wind6.6 mph NE
Humidity63%
Visibility—
Dew point29°
Sun, 0845° / 30°0
45 °
Altamont, Sunday, 8 November
Mostly clear. High 45°, low 30°.
Pressure30.03 inHg
Wind9.1 mph NW
Humidity53%
Visibility—
Dew point24°
Mon, 0946° / 29°0
46 °
Altamont, Monday, 9 November
Clear. High 46°, low 29°.
Pressure30.24 inHg
Wind7.7 mph SW
Humidity43%
Visibility—
Dew point19°
Tue, 1051° / 32°0
51 °
Altamont, Tuesday, 10 November
Partly cloudy. High 51°, low 32°.
Pressure30.18 inHg
Wind13.3 mph W
Humidity33%
Visibility—
Dew point17°
Wed, 1154° / 37°0
54 °
Altamont, Wednesday, 11 November
Overcast. High 54°, low 37°.
Pressure30.09 inHg
Wind11.9 mph W
Humidity38%
Visibility—
Dew point23°
Thu, 1251° / 33°0
51 °
Altamont, Thursday, 12 November
Clear. High 51°, low 33°.
Pressure30.12 inHg
Wind6 mph S
Humidity41%
Visibility—
Dew point22°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Wed, 1837° / 19°0.06
37 °
Altamont, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high37°
Average low19°
Average precipitation0.06 in
Chance of precipitation30%
Record high57° (2008)
Record low-9° (2000)
Thu, 1937° / 18°0.04
37 °
Altamont, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high37°
Average low18°
Average precipitation0.04 in
Chance of precipitation22%
Record high56° (2007)
Record low-9° (2022)
Fri, 2037° / 18°0.06
37 °
Altamont, Friday, 20 November
Climate normal for this date — 60-year average.
Average high37°
Average low18°
Average precipitation0.06 in
Chance of precipitation20%
Record high56° (1989)
Record low-4° (1994)
Sat, 2136° / 18°0.05
36 °
Altamont, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high36°
Average low18°
Average precipitation0.05 in
Chance of precipitation32%
Record high53° (1995)
Record low-1° (2015)
Sun, 2235° / 17°0.06
35 °
Altamont, Sunday, 22 November
Climate normal for this date — 60-year average.
Average high35°
Average low17°
Average precipitation0.06 in
Chance of precipitation35%
Record high51° (2017)
Record low-9° (1979)
Mon, 2334° / 16°0.04
34 °
Altamont, Monday, 23 November
Climate normal for this date — 60-year average.
Average high34°
Average low16°
Average precipitation0.04 in
Chance of precipitation35%
Record high53° (2017)
Record low-8° (2003)
Tue, 2434° / 15°0.06
34 °
Altamont, Tuesday, 24 November
Climate normal for this date — 60-year average.
Average high34°
Average low15°
Average precipitation0.06 in
Chance of precipitation30%
Record high53° (1995)
Record low-9° (1993)
Wed, 2533° / 15°0.09
33 °
Altamont, Wednesday, 25 November
Climate normal for this date — 60-year average.
Average high33°
Average low15°
Average precipitation0.09 in
Chance of precipitation33%
Record high56° (1995)
Record low-12° (2010)
Thu, 2631° / 15°0.09
31 °
Altamont, Thursday, 26 November
Climate normal for this date — 60-year average.
Average high31°
Average low15°
Average precipitation0.09 in
Chance of precipitation40%
Record high58° (2017)
Record low-11° (1993)
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.