Monthly outlook for Tattnall, MT: average high 48.6°, average low 34.9°. That is 5.6° above the climate normal for November. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 2 days and 0.4 inches. The warmest day looks like 11 November (56.1°), the coolest 24 November (24.1°).
48.6°/34.9°
Average high / low
+5.6°
Above normal
0 / 2
Wet days / normal
0.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 November – 18 November
53°
40°
+7.2°
19 November – 28 November
41.2°
34.5°
+3.7°
29 November – 8 December
at normal
30.2°
—
November records over 66 years
71.6°12 November 1999All-time high
-32.1°27 November 1985All-time low
Climate normals and records are computed from the nearest reference point — Valleytown (15 mi).
Tue, 1056° / 36°0
56 °
Tattnall, Tuesday, 10 November
Overcast. High 56°, low 36°.
Pressure29.94 inHg
Wind16.5 mph W
Humidity52%
Visibility6.2 mi
Dew point38°
Wed, 1156° / 35°0
56 °
Tattnall, Wednesday, 11 November
Clear. High 56°, low 35°.
Pressure30.12 inHg
Wind5.5 mph S
Humidity65%
Visibility6.2 mi
Dew point40°
Thu, 1254° / 36°0
54 °
Tattnall, Thursday, 12 November
Partly cloudy. High 54°, low 36°.
Pressure30.00 inHg
Wind6.2 mph SE
Humidity68%
Visibility6.2 mi
Dew point40°
Fri, 1353° / 38°0
53 °
Tattnall, Friday, 13 November
Overcast. High 53°, low 38°.
Pressure29.77 inHg
Wind11.7 mph SE
Humidity67%
Visibility6.2 mi
Dew point38°
Sat, 1453° / 36°0
53 °
Tattnall, Saturday, 14 November
Partly cloudy. High 53°, low 36°.
Pressure29.62 inHg
Wind11.9 mph SE
Humidity72%
Visibility—
Dew point36°
Sun, 1555° / 37°0
55 °
Tattnall, Sunday, 15 November
Clear. High 55°, low 37°.
Pressure29.88 inHg
Wind8.6 mph SW
Humidity56%
Visibility—
Dew point33°
Mon, 1655° / 42°0
55 °
Tattnall, Monday, 16 November
Clear. High 55°, low 42°.
Pressure29.80 inHg
Wind6.4 mph SE
Humidity40%
Visibility—
Dew point27°
Tue, 1752° / 43°0
52 °
Tattnall, Tuesday, 17 November
Overcast. High 52°, low 43°.
Pressure29.85 inHg
Wind12.9 mph W
Humidity48%
Visibility—
Dew point30°
Wed, 1845° / 37°0
45 °
Tattnall, Wednesday, 18 November
Overcast. High 45°, low 37°.
Pressure29.88 inHg
Wind10.2 mph N
Humidity46%
Visibility—
Dew point23°
Thu, 1944° / 35°0
44 °
Tattnall, Thursday, 19 November
Overcast. High 44°, low 35°.
Pressure30.30 inHg
Wind6.8 mph NW
Humidity48%
Visibility—
Dew point21°
Fri, 2044° / 32°0
44 °
Tattnall, Friday, 20 November
Clear. High 44°, low 32°.
Pressure30.47 inHg
Wind4.1 mph S
Humidity48%
Visibility—
Dew point22°
Sat, 2143° / 31°0
43 °
Tattnall, Saturday, 21 November
Partly cloudy. High 43°, low 31°.
Pressure30.56 inHg
Wind5 mph SE
Humidity50%
Visibility—
Dew point22°
Sun, 2244° / 30°0
44 °
Tattnall, Sunday, 22 November
Clear. High 44°, low 30°.
Pressure30.30 inHg
Wind11.1 mph S
Humidity51%
Visibility—
Dew point22°
Mon, 2339° / 30°0
39 °
Tattnall, Monday, 23 November
Mostly clear. High 39°, low 30°.
Pressure29.97 inHg
Wind18.6 mph NW
Humidity61%
Visibility—
Dew point25°
Tue, 2433° / 24°0
33 °
Tattnall, Tuesday, 24 November
Clear. High 33°, low 24°.
Pressure30.33 inHg
Wind9 mph NW
Humidity61%
Visibility—
Dew point18°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 2533° / 19°0.03
33 °
Tattnall, Wednesday, 25 November
Climate normal for this date — 60-year average.
Average high33°
Average low19°
Average precipitation0.03 in
Chance of precipitation22%
Record high54° (1962)
Record low-17° (2010)
Thu, 2632° / 18°0.02
32 °
Tattnall, Thursday, 26 November
Climate normal for this date — 60-year average.
Average high32°
Average low18°
Average precipitation0.02 in
Chance of precipitation7%
Record high59° (1962)
Record low-23° (1985)
Fri, 2731° / 17°0.01
31 °
Tattnall, Friday, 27 November
Climate normal for this date — 60-year average.
Average high31°
Average low17°
Average precipitation0.01 in
Chance of precipitation10%
Record high55° (2011)
Record low-32° (1985)
Sat, 2833° / 18°0.02
33 °
Tattnall, Saturday, 28 November
Climate normal for this date — 60-year average.
Average high33°
Average low18°
Average precipitation0.02 in
Chance of precipitation15%
Record high59° (2021)
Record low-26° (1985)
Sun, 2933° / 18°0.02
33 °
Tattnall, Sunday, 29 November
Climate normal for this date — 60-year average.
Average high33°
Average low18°
Average precipitation0.02 in
Chance of precipitation18%
Record high50° (1968)
Record low-26° (1985)
Mon, 3032° / 17°0.02
32 °
Tattnall, Monday, 30 November
Climate normal for this date — 60-year average.
Average high32°
Average low17°
Average precipitation0.02 in
Chance of precipitation12%
Record high51° (2021)
Record low-15° (2014)
Tue, 0132° / 16°0.03
32 °
Tattnall, Tuesday, 1 December
Climate normal for this date — 60-year average.
Average high32°
Average low16°
Average precipitation0.03 in
Chance of precipitation17%
Record high61° (2021)
Record low-18° (2014)
Wed, 0231° / 15°0.03
31 °
Tattnall, Wednesday, 2 December
Climate normal for this date — 60-year average.
Average high31°
Average low15°
Average precipitation0.03 in
Chance of precipitation15%
Record high51° (1988)
Record low-28° (1985)
Thu, 0332° / 14°0.02
32 °
Tattnall, Thursday, 3 December
Climate normal for this date — 60-year average.
Average high32°
Average low14°
Average precipitation0.02 in
Chance of precipitation17%
Record high53° (1989)
Record low-28° (1972)
Fri, 0431° / 15°0.02
31 °
Tattnall, Friday, 4 December
Climate normal for this date — 60-year average.
Average high31°
Average low15°
Average precipitation0.02 in
Chance of precipitation12%
Record high54° (1979)
Record low-25° (1972)
Sat, 0529° / 13°0.02
29 °
Tattnall, Saturday, 5 December
Climate normal for this date — 60-year average.
Average high29°
Average low13°
Average precipitation0.02 in
Chance of precipitation17%
Record high54° (2012)
Record low-25° (1970)
Sun, 0627° / 11°0.02
27 °
Tattnall, Sunday, 6 December
Climate normal for this date — 60-year average.
Average high27°
Average low11°
Average precipitation0.02 in
Chance of precipitation15%
Record high49° (1987)
Record low-26° (1977)
Mon, 0727° / 12°0.02
27 °
Tattnall, Monday, 7 December
Climate normal for this date — 60-year average.
Average high27°
Average low12°
Average precipitation0.02 in
Chance of precipitation12%
Record high50° (1987)
Record low-33° (1972)
Tue, 0829° / 10°0.02
29 °
Tattnall, Tuesday, 8 December
Climate normal for this date — 60-year average.
Average high29°
Average low10°
Average precipitation0.02 in
Chance of precipitation13%
Record high55° (2020)
Record low-33° (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 Tattnall, 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 Tattnall, 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.