As of 19:32 MDT

Weather in Tattnall, MT

52°Current weather

Tattnall, Wednesday, 21 October, 19:32

Clear. Feels like 50°. High 68°, low 35°.

Pressure29.94 inHg
Wind9.7 mph SE
Humidity68%
Visibility6.2 mi
Dew point42°

Monthly outlook for Tattnall, MT: average high 52°, average low 34.5°. That is 1.3° above the climate normal for October. Precipitation is expected on 1 day (about 0.2 inches), against a normal of 2 days and 0.4 inches. The warmest day looks like 22 October (69.9°), the coolest 28 October (28.9°).

52°/34.5°
Average high / low
+1.3°
Above normal
1 / 2
Wet days / normal
0.2 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
21 October – 30 October53.2°51.5°+1°
31 October – 9 November50°44.9°+2.8°
10 November – 19 Novemberat normal39.8°—

October records over 66 years

86.4°1 October 2011All-time high
-6°23 October 2020All-time low

Climate normals and records are computed from the nearest reference point — Valleytown (15 mi).

Thu, 2270° / 38°0Clear
70 °Clear

Tattnall, Thursday, 22 October

Clear. High 70°, low 38°.

Pressure29.91 inHg
Wind1.3 mph S
Humidity60%
Visibility6.2 mi
Dew point46°
Fri, 2362° / 37°0.2Rain
62 °Rain

Tattnall, Friday, 23 October

Rain. High 62°, low 37°.

Pressure29.62 inHg
Wind3.4 mph W
Humidity68%
Visibility6.2 mi
Dew point50°
Sat, 2446° / 31°0Clear
46 °Clear

Tattnall, Saturday, 24 October

Clear. High 46°, low 31°.

Pressure30.42 inHg
Wind8.5 mph W
Humidity66%
Visibility6.2 mi
Dew point24°
Sun, 2546° / 31°0Clear
46 °Clear

Tattnall, Sunday, 25 October

Clear. High 46°, low 31°.

Pressure30.53 inHg
Wind10.3 mph E
Humidity62%
Visibility6.2 mi
Dew point23°
Mon, 2640° / 33°0.01Snow
40 °Snow

Tattnall, Monday, 26 October

Snow. High 40°, low 33°.

Pressure30.59 inHg
Wind8.5 mph SE
Humidity81%
Visibility—
Dew point31°
Tue, 2741° / 32°0Partly cloudy
41 °Partly cloudy

Tattnall, Tuesday, 27 October

Partly cloudy. High 41°, low 32°.

Pressure30.42 inHg
Wind9.7 mph E
Humidity71%
Visibility—
Dew point31°
Wed, 2848° / 29°0Mostly clear
48 °Mostly clear

Tattnall, Wednesday, 28 October

Mostly clear. High 48°, low 29°.

Pressure30.36 inHg
Wind15.3 mph S
Humidity56%
Visibility—
Dew point25°
Thu, 2953° / 35°0Overcast
53 °Overcast

Tattnall, Thursday, 29 October

Overcast. High 53°, low 35°.

Pressure29.77 inHg
Wind8.1 mph SW
Humidity44%
Visibility—
Dew point25°
Fri, 3058° / 47°0Partly cloudy
58 °Partly cloudy

Tattnall, Friday, 30 October

Partly cloudy. High 58°, low 47°.

Pressure29.50 inHg
Wind20.9 mph W
Humidity44%
Visibility—
Dew point33°
Sat, 3147° / 38°0Overcast
47 °Overcast

Tattnall, Saturday, 31 October

Overcast. High 47°, low 38°.

Pressure29.74 inHg
Wind12.8 mph N
Humidity62%
Visibility—
Dew point30°
Sun, 0144° / 33°0Mostly clear
44 °Mostly clear

Tattnall, Sunday, 1 November

Mostly clear. High 44°, low 33°.

Pressure30.15 inHg
Wind20.1 mph NW
Humidity40%
Visibility—
Dew point19°
Mon, 0245° / 32°0Overcast
45 °Overcast

Tattnall, Monday, 2 November

Overcast. High 45°, low 32°.

Pressure30.33 inHg
Wind6.6 mph NW
Humidity52%
Visibility—
Dew point25°
Tue, 0354° / 34°0Partly cloudy
54 °Partly cloudy

Tattnall, Tuesday, 3 November

Partly cloudy. High 54°, low 34°.

Pressure29.97 inHg
Wind15.4 mph W
Humidity44%
Visibility—
Dew point23°
Wed, 0456° / 34°0Overcast
56 °Overcast

Tattnall, Wednesday, 4 November

Overcast. High 56°, low 34°.

Pressure29.62 inHg
Wind31.7 mph NW
Humidity51%
Visibility—
Dew point37°
Thu, 0554° / 32°0.01Light rain
54 °Light rain

Tattnall, Thursday, 5 November

Light rain. High 54°, low 32°.

Pressure29.74 inHg
Wind17.4 mph W
Humidity51%
Visibility—
Dew point23°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 0644° / 26°0.02Climate normal
44 °Climate normal

Tattnall, Friday, 6 November

Climate normal for this date — 60-year average.

Average high44°
Average low26°
Average precipitation0.02 in
Chance of precipitation12%
Record high65° (2010)
Record low0° (1991)
Sat, 0744° / 28°0.01Climate normal
44 °Climate normal

Tattnall, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high44°
Average low28°
Average precipitation0.01 in
Chance of precipitation7%
Record high68° (2010)
Record low4° (1991)
Sun, 0842° / 26°0.04Climate normal
42 °Climate normal

Tattnall, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high42°
Average low26°
Average precipitation0.04 in
Chance of precipitation23%
Record high64° (1962)
Record low-5° (1973)
Mon, 0940° / 24°0.04Climate normal
40 °Climate normal

Tattnall, Monday, 9 November

Climate normal for this date — 60-year average.

Average high40°
Average low24°
Average precipitation0.04 in
Chance of precipitation22%
Record high64° (2016)
Record low3° (2000)
Tue, 1040° / 24°0.02Climate normal
40 °Climate normal

Tattnall, Tuesday, 10 November

Climate normal for this date — 60-year average.

Average high40°
Average low24°
Average precipitation0.02 in
Chance of precipitation17%
Record high64° (1989)
Record low1° (2022)
Wed, 1139° / 23°0.02Climate normal
39 °Climate normal

Tattnall, Wednesday, 11 November

Climate normal for this date — 60-year average.

Average high39°
Average low23°
Average precipitation0.02 in
Chance of precipitation15%
Record high59° (1999)
Record low-14° (2019)
Thu, 1240° / 22°0.03Climate normal
40 °Climate normal

Tattnall, Thursday, 12 November

Climate normal for this date — 60-year average.

Average high40°
Average low22°
Average precipitation0.03 in
Chance of precipitation15%
Record high72° (1999)
Record low-6° (2014)
Fri, 1341° / 25°0.02Climate normal
41 °Climate normal

Tattnall, Friday, 13 November

Climate normal for this date — 60-year average.

Average high41°
Average low25°
Average precipitation0.02 in
Chance of precipitation17%
Record high62° (1999)
Record low-7° (2014)
Sat, 1441° / 25°0.02Climate normal
41 °Climate normal

Tattnall, Saturday, 14 November

Climate normal for this date — 60-year average.

Average high41°
Average low25°
Average precipitation0.02 in
Chance of precipitation15%
Record high63° (2001)
Record low-3° (2014)
Sun, 1541° / 23°0.01Climate normal
41 °Climate normal

Tattnall, Sunday, 15 November

Climate normal for this date — 60-year average.

Average high41°
Average low23°
Average precipitation0.01 in
Chance of precipitation13%
Record high61° (1975)
Record low-10° (2014)
Mon, 1641° / 24°0.02Climate normal
41 °Climate normal

Tattnall, Monday, 16 November

Climate normal for this date — 60-year average.

Average high41°
Average low24°
Average precipitation0.02 in
Chance of precipitation13%
Record high62° (2001)
Record low-10° (1996)
Tue, 1738° / 22°0.02Climate normal
38 °Climate normal

Tattnall, Tuesday, 17 November

Climate normal for this date — 60-year average.

Average high38°
Average low22°
Average precipitation0.02 in
Chance of precipitation10%
Record high59° (1976)
Record low-4° (1996)
Wed, 1839° / 22°0.02Climate normal
39 °Climate normal

Tattnall, Wednesday, 18 November

Climate normal for this date — 60-year average.

Average high39°
Average low22°
Average precipitation0.02 in
Chance of precipitation20%
Record high64° (2008)
Record low-7° (1978)
Thu, 1937° / 22°0.02Climate normal
37 °Climate normal

Tattnall, Thursday, 19 November

Climate normal for this date — 60-year average.

Average high37°
Average low22°
Average precipitation0.02 in
Chance of precipitation15%
Record high57° (1989)
Record low-10° (1978)

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.