Monthly outlook for Turtle Lake, MT: average high 46.7°, average low 34.5°. That is 2° below the climate normal for October. Precipitation is expected on 8 days (about 1.6 inches), against a normal of 7 days and 1.6 inches. The warmest day looks like 19 October (64.1°), the coolest 30 October (17.9°).
46.7°/34.5°
Average high / low
−2°
Below normal
8 / 7
Wet days / normal
1.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
18 October – 27 October
52.2°
52.4°
-0.1°
28 October – 6 November
37.4°
46°
-4.8°
7 November – 16 November
at normal
41.9°
—
October records over 66 years
81.7°1 October 1992All-time high
6.4°26 October 2020All-time low
Mon, 1964° / 28°0
64 °
Turtle Lake, Monday, 19 October
Overcast. High 64°, low 28°.
Pressure29.91 inHg
Wind3.3 mph NW
Humidity72%
Visibility0.8 mi
Dew point45°
Tue, 2059° / 38°0
59 °
Turtle Lake, Tuesday, 20 October
Overcast. High 59°, low 38°.
Pressure30.06 inHg
Wind2.8 mph NW
Humidity72%
Visibility—
Dew point46°
Wed, 2158° / 46°0
58 °
Turtle Lake, Wednesday, 21 October
Mostly clear. High 58°, low 46°.
Pressure30.03 inHg
Wind3 mph NW
Humidity73%
Visibility—
Dew point47°
Thu, 2255° / 49°0.03
55 °
Turtle Lake, Thursday, 22 October
Light rain. High 55°, low 49°.
Pressure29.77 inHg
Wind3.6 mph NW
Humidity71%
Visibility—
Dew point45°
Fri, 2349° / 41°0.11
49 °
Turtle Lake, Friday, 23 October
Light rain. High 49°, low 41°.
Pressure29.94 inHg
Wind15.7 mph SW
Humidity70%
Visibility—
Dew point35°
Sat, 2446° / 38°0
46 °
Turtle Lake, Saturday, 24 October
Overcast. High 46°, low 38°.
Pressure30.39 inHg
Wind10.1 mph S
Humidity65%
Visibility—
Dew point33°
Sun, 2546° / 41°0.08
46 °
Turtle Lake, Sunday, 25 October
Light rain. High 46°, low 41°.
Pressure30.12 inHg
Wind3.1 mph NW
Humidity48%
Visibility—
Dew point27°
Mon, 2645° / 41°0.23
45 °
Turtle Lake, Monday, 26 October
Light rain. High 45°, low 41°.
Pressure30.03 inHg
Wind6.9 mph N
Humidity83%
Visibility—
Dew point37°
Tue, 2740° / 35°0.56
40 °
Turtle Lake, Tuesday, 27 October
Snow. High 40°, low 35°.
Pressure29.91 inHg
Wind6.6 mph SW
Humidity99%
Visibility—
Dew point37°
Wed, 2841° / 33°0.1
41 °
Turtle Lake, Wednesday, 28 October
Snow. High 41°, low 33°.
Pressure29.97 inHg
Wind5.9 mph S
Humidity86%
Visibility—
Dew point34°
Thu, 2936° / 26°0.24
36 °
Turtle Lake, Thursday, 29 October
Snow. High 36°, low 26°.
Pressure29.94 inHg
Wind11.9 mph N
Humidity91%
Visibility—
Dew point30°
Fri, 3031° / 18°0
31 °
Turtle Lake, Friday, 30 October
Mostly clear. High 31°, low 18°.
Pressure30.39 inHg
Wind4.7 mph E
Humidity79%
Visibility—
Dew point21°
Sat, 3135° / 21°0
35 °
Turtle Lake, Saturday, 31 October
Partly cloudy. High 35°, low 21°.
Pressure30.27 inHg
Wind3.5 mph SE
Humidity77%
Visibility—
Dew point23°
Sun, 0136° / 26°0.04
36 °
Turtle Lake, Sunday, 1 November
Light rain. High 36°, low 26°.
Pressure30.03 inHg
Wind3.2 mph SE
Humidity80%
Visibility—
Dew point27°
Mon, 0246° / 35°0.23
46 °
Turtle Lake, Monday, 2 November
Snow. High 46°, low 35°.
Pressure29.85 inHg
Wind8.7 mph S
Humidity97%
Visibility—
Dew point37°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 0346° / 34°0.07
46 °
Turtle Lake, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high46°
Average low34°
Average precipitation0.07 in
Chance of precipitation38%
Record high61° (1981)
Record low10° (1973)
Wed, 0445° / 35°0.14
45 °
Turtle Lake, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high45°
Average low35°
Average precipitation0.14 in
Chance of precipitation62%
Record high59° (1975)
Record low9° (1973)
Thu, 0545° / 34°0.12
45 °
Turtle Lake, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high45°
Average low34°
Average precipitation0.12 in
Chance of precipitation63%
Record high61° (1980)
Record low15° (2003)
Fri, 0644° / 33°0.14
44 °
Turtle Lake, Friday, 6 November
Climate normal for this date — 60-year average.
Average high44°
Average low33°
Average precipitation0.14 in
Chance of precipitation62%
Record high62° (2010)
Record low17° (2003)
Sat, 0743° / 33°0.15
43 °
Turtle Lake, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high43°
Average low33°
Average precipitation0.15 in
Chance of precipitation57%
Record high58° (1978)
Record low16° (2017)
Sun, 0843° / 32°0.1
43 °
Turtle Lake, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high43°
Average low32°
Average precipitation0.1 in
Chance of precipitation53%
Record high59° (2016)
Record low16° (1982)
Mon, 0943° / 31°0.12
43 °
Turtle Lake, Monday, 9 November
Climate normal for this date — 60-year average.
Average high43°
Average low31°
Average precipitation0.12 in
Chance of precipitation52%
Record high62° (2016)
Record low9° (1986)
Tue, 1041° / 31°0.1
41 °
Turtle Lake, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high41°
Average low31°
Average precipitation0.1 in
Chance of precipitation57%
Record high59° (2016)
Record low4° (1986)
Wed, 1141° / 30°0.11
41 °
Turtle Lake, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high41°
Average low30°
Average precipitation0.11 in
Chance of precipitation45%
Record high59° (2016)
Record low7° (2014)
Thu, 1242° / 31°0.11
42 °
Turtle Lake, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high42°
Average low31°
Average precipitation0.11 in
Chance of precipitation50%
Record high62° (1999)
Record low9° (2014)
Fri, 1342° / 31°0.09
42 °
Turtle Lake, Friday, 13 November
Climate normal for this date — 60-year average.
Average high42°
Average low31°
Average precipitation0.09 in
Chance of precipitation53%
Record high62° (2025)
Record low12° (2014)
Sat, 1441° / 31°0.11
41 °
Turtle Lake, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high41°
Average low31°
Average precipitation0.11 in
Chance of precipitation52%
Record high59° (1999)
Record low13° (2014)
Sun, 1542° / 30°0.06
42 °
Turtle Lake, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high42°
Average low30°
Average precipitation0.06 in
Chance of precipitation35%
Record high61° (2021)
Record low12° (2014)
Mon, 1641° / 31°0.13
41 °
Turtle Lake, Monday, 16 November
Climate normal for this date — 60-year average.
Average high41°
Average low31°
Average precipitation0.13 in
Chance of precipitation52%
Record high57° (2025)
Record low13° (1996)
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 Turtle Lake, 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 Turtle Lake, 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.