Monthly outlook for McNamara, MT: average high 48.5°, average low 31.9°. That is 3.7° above the climate normal for November. Precipitation is expected on 2 days (about 0.3 inches), against a normal of 6 days and 1.0 inches. The warmest day looks like 12 November (55.9°), the coolest 19 November (25.2°).
48.5°/31.9°
Average high / low
+3.7°
Above normal
2 / 6
Wet days / normal
0.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
4 November – 13 November
49.4°
43°
+3.6°
14 November – 23 November
47.1°
38.7°
+4.7°
24 November – 3 December
at normal
33.9°
—
November records over 66 years
64.6°5 November 2020All-time high
-19.8°22 November 1970All-time low
Climate normals and records are computed from the nearest reference point — Potomac (5 mi).
Thu, 0539° / 30°0
39 °
McNamara, Thursday, 5 November
Overcast. High 39°, low 30°.
Pressure30.15 inHg
Wind7.9 mph W
Humidity67%
Visibility6.2 mi
Dew point31°
Fri, 0646° / 28°0
46 °
McNamara, Friday, 6 November
Overcast. High 46°, low 28°.
Pressure30.24 inHg
Wind4.9 mph SW
Humidity64%
Visibility6.2 mi
Dew point27°
Sat, 0750° / 35°0
50 °
McNamara, Saturday, 7 November
Overcast. High 50°, low 35°.
Pressure30.24 inHg
Wind1.1 mph SE
Humidity58%
Visibility6.2 mi
Dew point31°
Sun, 0850° / 35°0
50 °
McNamara, Sunday, 8 November
Overcast. High 50°, low 35°.
Pressure30.03 inHg
Wind13.4 mph W
Humidity54%
Visibility—
Dew point32°
Mon, 0947° / 33°0
47 °
McNamara, Monday, 9 November
Mostly clear. High 47°, low 33°.
Pressure30.27 inHg
Wind4.7 mph W
Humidity69%
Visibility—
Dew point31°
Tue, 1055° / 37°0
55 °
McNamara, Tuesday, 10 November
Partly cloudy. High 55°, low 37°.
Pressure30.06 inHg
Wind6.5 mph W
Humidity53%
Visibility—
Dew point33°
Wed, 1156° / 34°0
56 °
McNamara, Wednesday, 11 November
Partly cloudy. High 56°, low 34°.
Pressure30.21 inHg
Wind1.9 mph NE
Humidity49%
Visibility—
Dew point28°
Thu, 1256° / 33°0
56 °
McNamara, Thursday, 12 November
Overcast. High 56°, low 33°.
Pressure30.09 inHg
Wind2.2 mph E
Humidity40%
Visibility—
Dew point24°
Fri, 1354° / 34°0
54 °
McNamara, Friday, 13 November
Overcast. High 54°, low 34°.
Pressure30.06 inHg
Wind2.3 mph NE
Humidity38%
Visibility—
Dew point22°
Sat, 1454° / 33°0
54 °
McNamara, Saturday, 14 November
Partly cloudy. High 54°, low 33°.
Pressure30.06 inHg
Wind3.2 mph E
Humidity34%
Visibility—
Dew point19°
Sun, 1554° / 31°0
54 °
McNamara, Sunday, 15 November
Partly cloudy. High 54°, low 31°.
Pressure29.91 inHg
Wind3 mph NE
Humidity29%
Visibility—
Dew point15°
Mon, 1651° / 34°0.1
51 °
McNamara, Monday, 16 November
Snow. High 51°, low 34°.
Pressure29.85 inHg
Wind5.2 mph W
Humidity39%
Visibility—
Dew point23°
Tue, 1741° / 30°0.02
41 °
McNamara, Tuesday, 17 November
Light snow. High 41°, low 30°.
Pressure30.15 inHg
Wind4.9 mph W
Humidity66%
Visibility—
Dew point29°
Wed, 1844° / 28°0
44 °
McNamara, Wednesday, 18 November
Overcast. High 44°, low 28°.
Pressure30.03 inHg
Wind6.3 mph W
Humidity45%
Visibility—
Dew point20°
Thu, 1938° / 25°0.15
38 °
McNamara, Thursday, 19 November
Snow. High 38°, low 25°.
Pressure30.27 inHg
Wind4.6 mph SW
Humidity89%
Visibility—
Dew point31°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 2038° / 24°0.06
38 °
McNamara, Friday, 20 November
Climate normal for this date — 60-year average.
Average high38°
Average low24°
Average precipitation0.06 in
Chance of precipitation38%
Record high52° (1989)
Record low-5° (1977)
Sat, 2137° / 22°0.05
37 °
McNamara, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high37°
Average low22°
Average precipitation0.05 in
Chance of precipitation35%
Record high51° (2002)
Record low-5° (1977)
Sun, 2236° / 21°0.06
36 °
McNamara, Sunday, 22 November
Climate normal for this date — 60-year average.
Average high36°
Average low21°
Average precipitation0.06 in
Chance of precipitation38%
Record high54° (2021)
Record low-20° (1970)
Mon, 2336° / 21°0.05
36 °
McNamara, Monday, 23 November
Climate normal for this date — 60-year average.
Average high36°
Average low21°
Average precipitation0.05 in
Chance of precipitation37%
Record high57° (2017)
Record low-15° (1993)
Tue, 2435° / 23°0.11
35 °
McNamara, Tuesday, 24 November
Climate normal for this date — 60-year average.
Average high35°
Average low23°
Average precipitation0.11 in
Chance of precipitation48%
Record high46° (1976)
Record low-6° (1985)
Wed, 2535° / 21°0.12
35 °
McNamara, Wednesday, 25 November
Climate normal for this date — 60-year average.
Average high35°
Average low21°
Average precipitation0.12 in
Chance of precipitation48%
Record high48° (2022)
Record low-7° (2010)
Thu, 2634° / 20°0.07
34 °
McNamara, Thursday, 26 November
Climate normal for this date — 60-year average.
Average high34°
Average low20°
Average precipitation0.07 in
Chance of precipitation35%
Record high52° (2017)
Record low-3° (1985)
Fri, 2734° / 20°0.06
34 °
McNamara, Friday, 27 November
Climate normal for this date — 60-year average.
Average high34°
Average low20°
Average precipitation0.06 in
Chance of precipitation48%
Record high50° (2021)
Record low-6° (1967)
Sat, 2834° / 20°0.07
34 °
McNamara, Saturday, 28 November
Climate normal for this date — 60-year average.
Average high34°
Average low20°
Average precipitation0.07 in
Chance of precipitation37%
Record high58° (2021)
Record low-2° (1975)
Sun, 2933° / 19°0.05
33 °
McNamara, Sunday, 29 November
Climate normal for this date — 60-year average.
Average high33°
Average low19°
Average precipitation0.05 in
Chance of precipitation35%
Record high51° (2021)
Record low-4° (1985)
Mon, 3033° / 19°0.05
33 °
McNamara, Monday, 30 November
Climate normal for this date — 60-year average.
Average high33°
Average low19°
Average precipitation0.05 in
Chance of precipitation30%
Record high47° (2021)
Record low-14° (1985)
Tue, 0134° / 18°0.09
34 °
McNamara, Tuesday, 1 December
Climate normal for this date — 60-year average.
Average high34°
Average low18°
Average precipitation0.09 in
Chance of precipitation43%
Record high60° (2021)
Record low-19° (1985)
Wed, 0234° / 19°0.14
34 °
McNamara, Wednesday, 2 December
Climate normal for this date — 60-year average.
Average high34°
Average low19°
Average precipitation0.14 in
Chance of precipitation43%
Record high53° (2021)
Record low-18° (1985)
Thu, 0333° / 19°0.06
33 °
McNamara, Thursday, 3 December
Climate normal for this date — 60-year average.
Average high33°
Average low19°
Average precipitation0.06 in
Chance of precipitation38%
Record high48° (1987)
Record low-13° (1984)
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 McNamara, 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 McNamara, 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.