As of 16:50 MDT

Weather in Turtle Lake, MT

70°

Turtle Lake, Saturday, 17 October, 16:50

Overcast. Feels like 68°. High 70°, low 36°.

Pressure30.00 inHg

Wind11.2 mph SW

Humidity30%

Visibility6.2 mi

Dew point37°

See detailed hourly forecast

Monthly outlook for Turtle Lake, MT: average high 55.6°, average low 40.9°. That is 2.7° above the climate normal for October. Precipitation is expected on 5 days (about 1.2 inches), against a normal of 7 days and 1.6 inches. The warmest day looks like 17 October (70.2°), the coolest 19 October (28.6°).

55.6°/40.9°

Average high / low

+2.7°

Above normal

5 / 7

Wet days / normal

1.2 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
17 October – 26 October	58.5°	53.1°	+3°
27 October – 5 November	50.9°	46.4°	+2.5°
6 November – 15 November	at normal	42.2°	—

October records over 66 years

81.7°1 October 1992All-time high

6.4°26 October 2020All-time low

Sun, 1860° / 30°

60 °

Turtle Lake, Sunday, 18 October

Clear. High 60°, low 30°.

Pressure30.15 inHg

Wind3.2 mph W

Humidity62%

Visibility6.2 mi

Dew point40°

Mon, 1957° / 29°

57 °

Turtle Lake, Monday, 19 October

Overcast. High 57°, low 29°.

Pressure29.91 inHg

Wind3.4 mph NW

Humidity71%

Visibility1.2 mi

Dew point45°

Tue, 2058° / 47°

58 °

Turtle Lake, Tuesday, 20 October

Partly cloudy. High 58°, low 47°.

Pressure30.06 inHg

Wind2.1 mph NW

Humidity71%

Visibility6.2 mi

Dew point45°

Wed, 2158° / 47°

58 °

Turtle Lake, Wednesday, 21 October

Clear. High 58°, low 47°.

Pressure30.03 inHg

Wind2.8 mph NW

Humidity73%

Visibility—

Dew point47°

Thu, 2260° / 48°

0.33

60 °

Turtle Lake, Thursday, 22 October

Rain. High 60°, low 48°.

Pressure29.85 inHg

Wind4.5 mph SW

Humidity58%

Visibility—

Dew point41°

Fri, 2355° / 47°

0.32

55 °

Turtle Lake, Friday, 23 October

Rain. High 55°, low 47°.

Pressure30.03 inHg

Wind8.4 mph S

Humidity74%

Visibility—

Dew point44°

Sat, 2455° / 43°

55 °

Turtle Lake, Saturday, 24 October

Clear. High 55°, low 43°.

Pressure30.12 inHg

Wind4.5 mph E

Humidity59%

Visibility—

Dew point37°

Sun, 2555° / 43°

55 °

Turtle Lake, Sunday, 25 October

Clear. High 55°, low 43°.

Pressure30.18 inHg

Wind3.6 mph E

Humidity56%

Visibility—

Dew point35°

Mon, 2655° / 44°

55 °

Turtle Lake, Monday, 26 October

Overcast. High 55°, low 44°.

Pressure30.03 inHg

Wind3.6 mph NW

Humidity46%

Visibility—

Dew point31°

Tue, 2759° / 45°

59 °

Turtle Lake, Tuesday, 27 October

Overcast. High 59°, low 45°.

Pressure29.74 inHg

Wind3.4 mph NW

Humidity43%

Visibility—

Dew point31°

Wed, 2862° / 48°

62 °

Turtle Lake, Wednesday, 28 October

Overcast. High 62°, low 48°.

Pressure29.71 inHg

Wind5.4 mph S

Humidity42%

Visibility—

Dew point33°

Thu, 2948° / 41°

0.1

48 °

Turtle Lake, Thursday, 29 October

Light rain. High 48°, low 41°.

Pressure29.71 inHg

Wind21.3 mph SW

Humidity62%

Visibility—

Dew point33°

Fri, 3047° / 36°

47 °

Turtle Lake, Friday, 30 October

Overcast. High 47°, low 36°.

Pressure29.80 inHg

Wind11.2 mph S

Humidity49%

Visibility—

Dew point25°

Sat, 3147° / 38°

0.33

47 °

Turtle Lake, Saturday, 31 October

Snow. High 47°, low 38°.

Pressure29.44 inHg

Wind11.5 mph S

Humidity72%

Visibility—

Dew point36°

Sun, 0143° / 33°

0.08

43 °

Turtle Lake, Sunday, 1 November

Snow. High 43°, low 33°.

Pressure30.00 inHg

Wind15.5 mph S

Humidity60%

Visibility—

Dew point27°

From day 17 onward the outlook is built from 60-year climate statistics

Mon, 0246° / 34°

0.13

46 °

Turtle Lake, Monday, 2 November

Climate normal for this date — 60-year average.

Average high46°

Average low34°

Average precipitation0.13 in

Chance of precipitation47%

Record high62° (1981)

Record low12° (1991)

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)

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.