As of 06:24 MDT

Weather in Chinook, MT

35°

Chinook, Friday, 30 October, 06:24

Overcast. Feels like 28°. High 42°, low 34°.

Pressure30.21 inHg

Wind8.3 mph SE

Humidity92%

Visibility6.2 mi

Dew point33°

See detailed hourly forecast

Monthly outlook for Chinook, MT: average high 49.8°, average low 36.4°. That is 2.3° above the climate normal for October. Precipitation is expected on 4 days (about 2.2 inches), against a normal of 3 days and 0.5 inches. The warmest day looks like 9 November (63°), the coolest 3 November (28.9°).

49.8°/36.4°

Average high / low

+2.3°

Above normal

4 / 3

Wet days / normal

2.2 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
30 October – 8 November	51.8°	47.4°	+2.4°
9 November – 18 November	46.5°	42.4°	+2.3°
19 November – 28 November	at normal	37°	—

October records over 66 years

87.3°1 October 2011All-time high

-12.5°29 October 1991All-time low

Sat, 3145° / 34°

45 °

Chinook, Saturday, 31 October

Overcast. High 45°, low 34°.

Pressure30.09 inHg

Wind1.4 mph S

Humidity77%

Visibility3.3 mi

Dew point35°

Sun, 0150° / 32°

0.02

50 °

Chinook, Sunday, 1 November

Light rain. High 50°, low 32°.

Pressure30.03 inHg

Wind3 mph E

Humidity83%

Visibility6.2 mi

Dew point38°

Mon, 0252° / 34°

0.05

52 °

Chinook, Monday, 2 November

Light rain. High 52°, low 34°.

Pressure30.27 inHg

Wind11 mph W

Humidity67%

Visibility6.2 mi

Dew point36°

Tue, 0356° / 29°

56 °

Chinook, Tuesday, 3 November

Overcast. High 56°, low 29°.

Pressure30.21 inHg

Wind8.1 mph W

Humidity64%

Visibility—

Dew point30°

Wed, 0452° / 32°

52 °

Chinook, Wednesday, 4 November

Clear. High 52°, low 32°.

Pressure30.27 inHg

Wind9.2 mph SE

Humidity58%

Visibility—

Dew point30°

Thu, 0551° / 36°

51 °

Chinook, Thursday, 5 November

Overcast. High 51°, low 36°.

Pressure29.83 inHg

Wind15.7 mph SE

Humidity59%

Visibility—

Dew point31°

Fri, 0653° / 39°

53 °

Chinook, Friday, 6 November

Overcast. High 53°, low 39°.

Pressure29.80 inHg

Wind15.5 mph W

Humidity51%

Visibility—

Dew point30°

Sat, 0758° / 39°

58 °

Chinook, Saturday, 7 November

Overcast. High 58°, low 39°.

Pressure30.06 inHg

Wind9.4 mph W

Humidity34%

Visibility—

Dew point24°

Sun, 0859° / 45°

59 °

Chinook, Sunday, 8 November

Overcast. High 59°, low 45°.

Pressure29.94 inHg

Wind5.2 mph E

Humidity41%

Visibility—

Dew point31°

Mon, 0963° / 45°

63 °

Chinook, Monday, 9 November

Overcast. High 63°, low 45°.

Pressure29.53 inHg

Wind18.7 mph W

Humidity32%

Visibility—

Dew point26°

Tue, 1057° / 44°

57 °

Chinook, Tuesday, 10 November

Clear. High 57°, low 44°.

Pressure29.26 inHg

Wind20.3 mph W

Humidity42%

Visibility—

Dew point31°

Wed, 1149° / 38°

49 °

Chinook, Wednesday, 11 November

Overcast. High 49°, low 38°.

Pressure29.38 inHg

Wind12.1 mph W

Humidity36%

Visibility—

Dew point20°

Thu, 1239° / 33°

0.78

39 °

Chinook, Thursday, 12 November

Snow. High 39°, low 33°.

Pressure29.68 inHg

Wind26.3 mph NW

Humidity90%

Visibility—

Dew point34°

Fri, 1335° / 34°

1.08

35 °

Chinook, Friday, 13 November

Snow. High 35°, low 34°.

Pressure30.09 inHg

Wind20 mph NW

Humidity100%

Visibility—

Dew point34°

Sat, 1436° / 35°

0.22

36 °

Chinook, Saturday, 14 November

Snow. High 36°, low 35°.

Pressure30.18 inHg

Wind15.2 mph NW

Humidity98%

Visibility—

Dew point34°

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

Sun, 1544° / 25°

0.01

44 °

Chinook, Sunday, 15 November

Climate normal for this date — 60-year average.

Average high44°

Average low25°

Average precipitation0.01 in

Chance of precipitation10%

Record high66° (2021)

Record low-11° (2014)

Mon, 1644° / 27°

0.04

44 °

Chinook, Monday, 16 November

Climate normal for this date — 60-year average.

Average high44°

Average low27°

Average precipitation0.04 in

Chance of precipitation15%

Record high64° (2001)

Record low-1° (1996)

Tue, 1740° / 25°

0.03

40 °

Chinook, Tuesday, 17 November

Climate normal for this date — 60-year average.

Average high40°

Average low25°

Average precipitation0.03 in

Chance of precipitation18%

Record high65° (2009)

Record low-4° (1996)

Wed, 1840° / 24°

0.02

40 °

Chinook, Wednesday, 18 November

Climate normal for this date — 60-year average.

Average high40°

Average low24°

Average precipitation0.02 in

Chance of precipitation18%

Record high64° (2008)

Record low-7° (1986)

Thu, 1939° / 23°

0.02

39 °

Chinook, Thursday, 19 November

Climate normal for this date — 60-year average.

Average high39°

Average low23°

Average precipitation0.02 in

Chance of precipitation13%

Record high60° (2003)

Record low-6° (1978)

Fri, 2040° / 23°

0.02

40 °

Chinook, Friday, 20 November

Climate normal for this date — 60-year average.

Average high40°

Average low23°

Average precipitation0.02 in

Chance of precipitation13%

Record high58° (2009)

Record low-14° (1985)

Sat, 2139° / 22°

0.02

39 °

Chinook, Saturday, 21 November

Climate normal for this date — 60-year average.

Average high39°

Average low22°

Average precipitation0.02 in

Chance of precipitation23%

Record high63° (1974)

Record low-17° (1985)

Sun, 2237° / 23°

0.03

37 °

Chinook, Sunday, 22 November

Climate normal for this date — 60-year average.

Average high37°

Average low23°

Average precipitation0.03 in

Chance of precipitation17%

Record high58° (2017)

Record low-19° (1985)

Mon, 2338° / 22°

0.02

38 °

Chinook, Monday, 23 November

Climate normal for this date — 60-year average.

Average high38°

Average low22°

Average precipitation0.02 in

Chance of precipitation18%

Record high66° (2017)

Record low-25° (1985)

Tue, 2438° / 23°

0.04

38 °

Chinook, Tuesday, 24 November

Climate normal for this date — 60-year average.

Average high38°

Average low23°

Average precipitation0.04 in

Chance of precipitation27%

Record high56° (1986)

Record low-18° (1993)

Wed, 2536° / 22°

0.04

36 °

Chinook, Wednesday, 25 November

Climate normal for this date — 60-year average.

Average high36°

Average low22°

Average precipitation0.04 in

Chance of precipitation22%

Record high58° (2022)

Record low-16° (1993)

Thu, 2634° / 20°

0.03

34 °

Chinook, Thursday, 26 November

Climate normal for this date — 60-year average.

Average high34°

Average low20°

Average precipitation0.03 in

Chance of precipitation22%

Record high61° (1998)

Record low-24° (1985)

Fri, 2734° / 19°

0.02

34 °

Chinook, Friday, 27 November

Climate normal for this date — 60-year average.

Average high34°

Average low19°

Average precipitation0.02 in

Chance of precipitation13%

Record high59° (2011)

Record low-28° (1985)

Sat, 2836° / 21°

0.03

36 °

Chinook, Saturday, 28 November

Climate normal for this date — 60-year average.

Average high36°

Average low21°

Average precipitation0.03 in

Chance of precipitation22%

Record high62° (2021)

Record low-23° (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 Chinook, 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 Chinook, 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.