As of 08:27 MDT

Weather in Tattnall, MT

28°Current weather

Tattnall, Sunday, 25 October, 08:27

Clear. Feels like 19°. High 44°, low 28°.

Pressure30.53 inHg
Wind10.5 mph NE
Humidity85%
Visibility6.2 mi
Dew point25°

Monthly outlook for Tattnall, MT: average high 49.9°, average low 36.9°. That is 1.7° 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 9 November (64.4°), the coolest 30 October (26.4°).

49.9°/36.9°
Average high / low
+1.7°
Above normal
1 / 2
Wet days / normal
0.2 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
25 October – 3 November47.5°48.6°-0.6°
4 November – 13 November53.8°42.3°+6.4°
14 November – 23 Novemberat normal38.1°—

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).

Mon, 2644° / 31°0Overcast
44 °Overcast

Tattnall, Monday, 26 October

Overcast. High 44°, low 31°.

Pressure30.33 inHg
Wind17.4 mph SE
Humidity67%
Visibility6.2 mi
Dew point28°
Tue, 2737° / 35°0.16Light rain
37 °Light rain

Tattnall, Tuesday, 27 October

Light rain. High 37°, low 35°.

Pressure29.88 inHg
Wind7.9 mph SE
Humidity85%
Visibility6.2 mi
Dew point33°
Wed, 2854° / 39°0.01Light rain
54 °Light rain

Tattnall, Wednesday, 28 October

Light rain. High 54°, low 39°.

Pressure29.91 inHg
Wind9.8 mph W
Humidity54%
Visibility6.2 mi
Dew point33°
Thu, 2943° / 32°0Partly cloudy
43 °Partly cloudy

Tattnall, Thursday, 29 October

Partly cloudy. High 43°, low 32°.

Pressure30.27 inHg
Wind12.2 mph NW
Humidity76%
Visibility—
Dew point31°
Fri, 3043° / 26°0.01Light rain
43 °Light rain

Tattnall, Friday, 30 October

Light rain. High 43°, low 26°.

Pressure30.33 inHg
Wind10.1 mph E
Humidity75%
Visibility—
Dew point28°
Sat, 3153° / 38°0Mostly clear
53 °Mostly clear

Tattnall, Saturday, 31 October

Mostly clear. High 53°, low 38°.

Pressure30.00 inHg
Wind6.8 mph SE
Humidity54%
Visibility—
Dew point31°
Sun, 0160° / 43°0Overcast
60 °Overcast

Tattnall, Sunday, 1 November

Overcast. High 60°, low 43°.

Pressure29.83 inHg
Wind8.3 mph E
Humidity58%
Visibility—
Dew point37°
Mon, 0249° / 40°0Overcast
49 °Overcast

Tattnall, Monday, 2 November

Overcast. High 49°, low 40°.

Pressure29.62 inHg
Wind17.5 mph N
Humidity59%
Visibility—
Dew point33°
Tue, 0349° / 38°0Overcast
49 °Overcast

Tattnall, Tuesday, 3 November

Overcast. High 49°, low 38°.

Pressure30.06 inHg
Wind22.6 mph NW
Humidity56%
Visibility—
Dew point29°
Wed, 0454° / 38°0Overcast
54 °Overcast

Tattnall, Wednesday, 4 November

Overcast. High 54°, low 38°.

Pressure29.94 inHg
Wind6.8 mph SE
Humidity48%
Visibility—
Dew point29°
Thu, 0553° / 40°0Mostly clear
53 °Mostly clear

Tattnall, Thursday, 5 November

Mostly clear. High 53°, low 40°.

Pressure29.85 inHg
Wind8.6 mph E
Humidity49%
Visibility—
Dew point31°
Fri, 0648° / 43°0Overcast
48 °Overcast

Tattnall, Friday, 6 November

Overcast. High 48°, low 43°.

Pressure29.44 inHg
Wind16 mph E
Humidity46%
Visibility—
Dew point28°
Sat, 0754° / 39°0Overcast
54 °Overcast

Tattnall, Saturday, 7 November

Overcast. High 54°, low 39°.

Pressure29.53 inHg
Wind18.1 mph W
Humidity54%
Visibility—
Dew point34°
Sun, 0849° / 35°0Mostly clear
49 °Mostly clear

Tattnall, Sunday, 8 November

Mostly clear. High 49°, low 35°.

Pressure29.97 inHg
Wind8.5 mph SE
Humidity62%
Visibility—
Dew point31°
Mon, 0964° / 44°0Mostly clear
64 °Mostly clear

Tattnall, Monday, 9 November

Mostly clear. High 64°, low 44°.

Pressure29.91 inHg
Wind6.5 mph S
Humidity54%
Visibility—
Dew point39°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Fri, 2037° / 21°0.02Climate normal
37 °Climate normal

Tattnall, Friday, 20 November

Climate normal for this date — 60-year average.

Average high37°
Average low21°
Average precipitation0.02 in
Chance of precipitation8%
Record high58° (1968)
Record low-15° (1978)
Sat, 2136° / 20°0.02Climate normal
36 °Climate normal

Tattnall, Saturday, 21 November

Climate normal for this date — 60-year average.

Average high36°
Average low20°
Average precipitation0.02 in
Chance of precipitation17%
Record high60° (1974)
Record low-16° (1996)
Sun, 2235° / 20°0.02Climate normal
35 °Climate normal

Tattnall, Sunday, 22 November

Climate normal for this date — 60-year average.

Average high35°
Average low20°
Average precipitation0.02 in
Chance of precipitation15%
Record high55° (2005)
Record low-13° (1996)
Mon, 2335° / 19°0.02Climate normal
35 °Climate normal

Tattnall, Monday, 23 November

Climate normal for this date — 60-year average.

Average high35°
Average low19°
Average precipitation0.02 in
Chance of precipitation12%
Record high63° (2017)
Record low-30° (1985)

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.