Monthly outlook for Allentown, MT: average high 51.5°, average low 36.5°. That is 0.9° above the climate normal for October. Precipitation is expected on 5 days (about 1.0 inches), against a normal of 7 days and 1.5 inches. The warmest day looks like 22 October (65.4°), the coolest 1 November (30.8°).
51.5°/36.5°
Average high / low
+0.9°
Above normal
5 / 7
Wet days / normal
1.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
21 October – 30 October
53°
51.8°
+0.6°
31 October – 9 November
49.1°
45.9°
+1.8°
10 November – 19 November
at normal
41.7°
—
October records over 66 years
85.6°1 October 1992All-time high
-2.2°25 October 2020All-time low
Climate normals and records are computed from the nearest reference point — St. Ignatius (8 mi).
Thu, 2265° / 38°0
65 °
Allentown, Thursday, 22 October
Clear. High 65°, low 38°.
Pressure29.88 inHg
Wind2.6 mph W
Humidity54%
Visibility6.2 mi
Dew point41°
Fri, 2350° / 38°0.44
50 °
Allentown, Friday, 23 October
Rain. High 50°, low 38°.
Pressure29.88 inHg
Wind5.6 mph NW
Humidity97%
Visibility1.7 mi
Dew point47°
Sat, 2448° / 32°0
48 °
Allentown, Saturday, 24 October
Partly cloudy. High 48°, low 32°.
Pressure30.27 inHg
Wind2.3 mph W
Humidity61%
Visibility6.2 mi
Dew point33°
Sun, 2550° / 35°0
50 °
Allentown, Sunday, 25 October
Overcast. High 50°, low 35°.
Pressure30.24 inHg
Wind3.1 mph W
Humidity67%
Visibility6.2 mi
Dew point36°
Mon, 2645° / 32°0
45 °
Allentown, Monday, 26 October
Clear. High 45°, low 32°.
Pressure30.36 inHg
Wind3.5 mph W
Humidity72%
Visibility—
Dew point31°
Tue, 2751° / 38°0.08
51 °
Allentown, Tuesday, 27 October
Light rain. High 51°, low 38°.
Pressure30.03 inHg
Wind3.2 mph W
Humidity64%
Visibility—
Dew point37°
Wed, 2853° / 42°0.09
53 °
Allentown, Wednesday, 28 October
Light rain. High 53°, low 42°.
Pressure30.27 inHg
Wind3.5 mph N
Humidity76%
Visibility—
Dew point40°
Thu, 2953° / 37°0
53 °
Allentown, Thursday, 29 October
Clear. High 53°, low 37°.
Pressure30.06 inHg
Wind4 mph SE
Humidity60%
Visibility—
Dew point33°
Fri, 3054° / 37°0
54 °
Allentown, Friday, 30 October
Mostly clear. High 54°, low 37°.
Pressure29.68 inHg
Wind11.2 mph NW
Humidity52%
Visibility—
Dew point31°
Sat, 3143° / 37°0.09
43 °
Allentown, Saturday, 31 October
Snow. High 43°, low 37°.
Pressure29.85 inHg
Wind10.9 mph W
Humidity70%
Visibility—
Dew point33°
Sun, 0149° / 31°0
49 °
Allentown, Sunday, 1 November
Mostly clear. High 49°, low 31°.
Pressure30.12 inHg
Wind5.9 mph SE
Humidity53%
Visibility—
Dew point26°
Mon, 0253° / 36°0
53 °
Allentown, Monday, 2 November
Mostly clear. High 53°, low 36°.
Pressure30.21 inHg
Wind5.4 mph SE
Humidity48%
Visibility—
Dew point28°
Tue, 0353° / 37°0
53 °
Allentown, Tuesday, 3 November
Overcast. High 53°, low 37°.
Pressure30.06 inHg
Wind3.8 mph SW
Humidity47%
Visibility—
Dew point28°
Wed, 0453° / 39°0
53 °
Allentown, Wednesday, 4 November
Overcast. High 53°, low 39°.
Pressure29.88 inHg
Wind6.5 mph S
Humidity67%
Visibility—
Dew point37°
Thu, 0545° / 37°0.25
45 °
Allentown, Thursday, 5 November
Snow. High 45°, low 37°.
Pressure29.71 inHg
Wind13 mph W
Humidity65%
Visibility—
Dew point33°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 0646° / 31°0.13
46 °
Allentown, Friday, 6 November
Climate normal for this date — 60-year average.
Average high46°
Average low31°
Average precipitation0.13 in
Chance of precipitation58%
Record high63° (2010)
Record low2° (2003)
Sat, 0744° / 30°0.13
44 °
Allentown, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high44°
Average low30°
Average precipitation0.13 in
Chance of precipitation47%
Record high58° (1978)
Record low8° (2000)
Sun, 0844° / 30°0.09
44 °
Allentown, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high44°
Average low30°
Average precipitation0.09 in
Chance of precipitation50%
Record high60° (2016)
Record low9° (2000)
Mon, 0944° / 30°0.1
44 °
Allentown, Monday, 9 November
Climate normal for this date — 60-year average.
Average high44°
Average low30°
Average precipitation0.1 in
Chance of precipitation48%
Record high64° (2016)
Record low11° (1986)
Tue, 1043° / 28°0.07
43 °
Allentown, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high43°
Average low28°
Average precipitation0.07 in
Chance of precipitation40%
Record high62° (2016)
Record low-10° (1986)
Wed, 1142° / 27°0.09
42 °
Allentown, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high42°
Average low27°
Average precipitation0.09 in
Chance of precipitation37%
Record high61° (2016)
Record low-2° (2000)
Thu, 1242° / 28°0.11
42 °
Allentown, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high42°
Average low28°
Average precipitation0.11 in
Chance of precipitation48%
Record high66° (1999)
Record low0° (1986)
Fri, 1342° / 29°0.1
42 °
Allentown, Friday, 13 November
Climate normal for this date — 60-year average.
Average high42°
Average low29°
Average precipitation0.1 in
Chance of precipitation52%
Record high65° (2025)
Record low4° (2000)
Sat, 1442° / 28°0.09
42 °
Allentown, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high42°
Average low28°
Average precipitation0.09 in
Chance of precipitation40%
Record high62° (1999)
Record low2° (2000)
Sun, 1543° / 27°0.04
43 °
Allentown, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high43°
Average low27°
Average precipitation0.04 in
Chance of precipitation30%
Record high62° (2021)
Record low5° (2014)
Mon, 1642° / 28°0.1
42 °
Allentown, Monday, 16 November
Climate normal for this date — 60-year average.
Average high42°
Average low28°
Average precipitation0.1 in
Chance of precipitation52%
Record high57° (2001)
Record low6° (1996)
Tue, 1741° / 29°0.09
41 °
Allentown, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high41°
Average low29°
Average precipitation0.09 in
Chance of precipitation52%
Record high57° (1976)
Record low4° (1961)
Wed, 1840° / 28°0.11
40 °
Allentown, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high40°
Average low28°
Average precipitation0.11 in
Chance of precipitation52%
Record high60° (2008)
Record low1° (2022)
Thu, 1939° / 27°0.09
39 °
Allentown, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high39°
Average low27°
Average precipitation0.09 in
Chance of precipitation43%
Record high53° (2008)
Record low0° (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 Allentown, MT 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 Allentown, MT 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.