Monthly outlook for McNamara, MT: average high 44.5°, average low 29.9°. That is 2.8° 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 10 November (58.3°), the coolest 20 November (21.4°).
44.5°/29.9°
Average high / low
+2.8°
Above normal
2 / 6
Wet days / normal
0.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 November – 18 November
48.8°
41°
+4.3°
19 November – 28 November
37.4°
35.7°
+0.9°
29 November – 8 December
at normal
32.1°
—
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).
Tue, 1058° / 35°0.04
58 °
McNamara, Tuesday, 10 November
Light rain. High 58°, low 35°.
Pressure30.21 inHg
Wind10.5 mph W
Humidity69%
Visibility6.2 mi
Dew point36°
Wed, 1154° / 39°0
54 °
McNamara, Wednesday, 11 November
Overcast. High 54°, low 39°.
Pressure30.18 inHg
Wind2.3 mph S
Humidity56%
Visibility6.2 mi
Dew point36°
Thu, 1254° / 41°0
54 °
McNamara, Thursday, 12 November
Overcast. High 54°, low 41°.
Pressure30.00 inHg
Wind1.4 mph SE
Humidity46%
Visibility6.2 mi
Dew point29°
Fri, 1352° / 39°0
52 °
McNamara, Friday, 13 November
Partly cloudy. High 52°, low 39°.
Pressure29.68 inHg
Wind1.4 mph SE
Humidity51%
Visibility6.2 mi
Dew point25°
Sat, 1447° / 32°0.05
47 °
McNamara, Saturday, 14 November
Light rain. High 47°, low 32°.
Pressure29.53 inHg
Wind8.3 mph W
Humidity58%
Visibility—
Dew point32°
Sun, 1551° / 32°0
51 °
McNamara, Sunday, 15 November
Overcast. High 51°, low 32°.
Pressure29.85 inHg
Wind4.4 mph SW
Humidity56%
Visibility—
Dew point29°
Mon, 1643° / 35°0.16
43 °
McNamara, Monday, 16 November
Snow. High 43°, low 35°.
Pressure29.83 inHg
Wind4.1 mph W
Humidity65%
Visibility—
Dew point31°
Tue, 1739° / 26°0.01
39 °
McNamara, Tuesday, 17 November
Light snow. High 39°, low 26°.
Pressure30.06 inHg
Wind6.7 mph W
Humidity69%
Visibility—
Dew point28°
Wed, 1839° / 24°0.01
39 °
McNamara, Wednesday, 18 November
Light snow. High 39°, low 24°.
Pressure29.94 inHg
Wind4.5 mph W
Humidity66%
Visibility—
Dew point23°
Thu, 1936° / 24°0.04
36 °
McNamara, Thursday, 19 November
Light snow. High 36°, low 24°.
Pressure30.21 inHg
Wind4.5 mph W
Humidity70%
Visibility—
Dew point26°
Fri, 2036° / 21°0.01
36 °
McNamara, Friday, 20 November
Light snow. High 36°, low 21°.
Pressure30.18 inHg
Wind3.8 mph SW
Humidity61%
Visibility—
Dew point20°
Sat, 2140° / 24°0
40 °
McNamara, Saturday, 21 November
Overcast. High 40°, low 24°.
Pressure30.15 inHg
Wind2.7 mph W
Humidity71%
Visibility—
Dew point24°
Sun, 2239° / 25°0
39 °
McNamara, Sunday, 22 November
Overcast. High 39°, low 25°.
Pressure30.09 inHg
Wind4.8 mph W
Humidity70%
Visibility—
Dew point26°
Mon, 2338° / 26°0
38 °
McNamara, Monday, 23 November
Overcast. High 38°, low 26°.
Pressure30.06 inHg
Wind4.7 mph W
Humidity69%
Visibility—
Dew point27°
Tue, 2435° / 23°0
35 °
McNamara, Tuesday, 24 November
Partly cloudy. High 35°, low 23°.
Pressure30.24 inHg
Wind4 mph W
Humidity67%
Visibility—
Dew point22°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Fri, 0432° / 17°0.07
32 °
McNamara, Friday, 4 December
Climate normal for this date — 60-year average.
Average high32°
Average low17°
Average precipitation0.07 in
Chance of precipitation37%
Record high47° (2019)
Record low-23° (1972)
Sat, 0531° / 16°0.06
31 °
McNamara, Saturday, 5 December
Climate normal for this date — 60-year average.
Average high31°
Average low16°
Average precipitation0.06 in
Chance of precipitation33%
Record high55° (2023)
Record low-33° (1972)
Sun, 0631° / 16°0.07
31 °
McNamara, Sunday, 6 December
Climate normal for this date — 60-year average.
Average high31°
Average low16°
Average precipitation0.07 in
Chance of precipitation33%
Record high50° (2023)
Record low-27° (1972)
Mon, 0730° / 14°0.06
30 °
McNamara, Monday, 7 December
Climate normal for this date — 60-year average.
Average high30°
Average low14°
Average precipitation0.06 in
Chance of precipitation40%
Record high47° (2019)
Record low-25° (2013)
Tue, 0830° / 14°0.05
30 °
McNamara, Tuesday, 8 December
Climate normal for this date — 60-year average.
Average high30°
Average low14°
Average precipitation0.05 in
Chance of precipitation33%
Record high54° (2020)
Record low-36° (1972)
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.