As of 06:37 MDT

Weather in Foster, MT

47°

Foster, Wednesday, 7 October, 06:37

Mostly clear. Feels like 47°. High 76°, low 47°.

Pressure30.06 inHg

Wind3.1 mph SW

Humidity53%

Visibility6.2 mi

Dew point31°

See detailed hourly forecast

Monthly outlook for Foster, MT: average high 59.5°, average low 40.3°. That is 1.5° below the climate normal for October. Precipitation is expected on 2 days (about 0.9 inches), against a normal of 4 days and 0.8 inches. The warmest day looks like 9 October (86°), the coolest 12 October (30.9°).

59.5°/40.3°

Average high / low

−1.5°

Below normal

2 / 4

Wet days / normal

0.9 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
7 October – 16 October	61.7°	62.7°	-0.6°
17 October – 26 October	55.9°	60.2°	-2.4°
27 October – 5 November	at normal	53.5°	—

October records over 66 years

92.8°1 October 2011All-time high

-18.8°30 October 1991All-time low

Climate normals and records are computed from the nearest reference point — Hardin (13 mi).

Thu, 0881° / 43°

81 °

Foster, Thursday, 8 October

Partly cloudy. High 81°, low 43°.

Pressure29.94 inHg

Wind6.4 mph SW

Humidity26%

Visibility6.2 mi

Dew point36°

Fri, 0986° / 52°

86 °

Foster, Friday, 9 October

Partly cloudy. High 86°, low 52°.

Pressure29.53 inHg

Wind5.1 mph SW

Humidity17%

Visibility6.2 mi

Dew point30°

Sat, 1064° / 49°

0.02

64 °

Foster, Saturday, 10 October

Light rain. High 64°, low 49°.

Pressure29.62 inHg

Wind5.9 mph NE

Humidity38%

Visibility6.2 mi

Dew point36°

Sun, 1145° / 33°

0.41

45 °

Foster, Sunday, 11 October

Snow. High 45°, low 33°.

Pressure30.21 inHg

Wind14.3 mph N

Humidity95%

Visibility—

Dew point35°

Mon, 1236° / 31°

0.46

36 °

Foster, Monday, 12 October

Snow. High 36°, low 31°.

Pressure30.39 inHg

Wind7.5 mph NE

Humidity88%

Visibility—

Dew point30°

Tue, 1370° / 38°

70 °

Foster, Tuesday, 13 October

Clear. High 70°, low 38°.

Pressure29.71 inHg

Wind10 mph SW

Humidity56%

Visibility—

Dew point42°

Wed, 1459° / 43°

0.02

59 °

Foster, Wednesday, 14 October

Light rain. High 59°, low 43°.

Pressure29.74 inHg

Wind18.7 mph N

Humidity49%

Visibility—

Dew point30°

Thu, 1548° / 39°

48 °

Foster, Thursday, 15 October

Overcast. High 48°, low 39°.

Pressure30.27 inHg

Wind26.3 mph NW

Humidity35%

Visibility—

Dew point19°

Fri, 1652° / 35°

52 °

Foster, Friday, 16 October

Clear. High 52°, low 35°.

Pressure30.39 inHg

Wind7.4 mph W

Humidity34%

Visibility—

Dew point19°

Sat, 1754° / 41°

54 °

Foster, Saturday, 17 October

Overcast. High 54°, low 41°.

Pressure30.30 inHg

Wind6.1 mph N

Humidity27%

Visibility—

Dew point17°

Sun, 1859° / 38°

59 °

Foster, Sunday, 18 October

Overcast. High 59°, low 38°.

Pressure30.12 inHg

Wind7.1 mph S

Humidity29%

Visibility—

Dew point21°

Mon, 1955° / 42°

55 °

Foster, Monday, 19 October

Clear. High 55°, low 42°.

Pressure30.21 inHg

Wind11.3 mph SE

Humidity33%

Visibility—

Dew point22°

Tue, 2053° / 37°

53 °

Foster, Tuesday, 20 October

Overcast. High 53°, low 37°.

Pressure30.45 inHg

Wind6.1 mph SE

Humidity46%

Visibility—

Dew point28°

Wed, 2155° / 37°

55 °

Foster, Wednesday, 21 October

Mostly clear. High 55°, low 37°.

Pressure30.42 inHg

Wind3.7 mph S

Humidity38%

Visibility—

Dew point24°

Thu, 2259° / 40°

59 °

Foster, Thursday, 22 October

Partly cloudy. High 59°, low 40°.

Pressure30.09 inHg

Wind10.6 mph N

Humidity24%

Visibility—

Dew point17°

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

Fri, 2359° / 36°

0.04

59 °

Foster, Friday, 23 October

Climate normal for this date — 60-year average.

Average high59°

Average low36°

Average precipitation0.04 in

Chance of precipitation23%

Record high78° (1973)

Record low2° (2020)

Sat, 2459° / 36°

0.04

59 °

Foster, Saturday, 24 October

Climate normal for this date — 60-year average.

Average high59°

Average low36°

Average precipitation0.04 in

Chance of precipitation22%

Record high78° (1992)

Record low15° (2020)

Sun, 2559° / 36°

0.03

59 °

Foster, Sunday, 25 October

Climate normal for this date — 60-year average.

Average high59°

Average low36°

Average precipitation0.03 in

Chance of precipitation17%

Record high78° (1977)

Record low-4° (2020)

Mon, 2657° / 36°

0.05

57 °

Foster, Monday, 26 October

Climate normal for this date — 60-year average.

Average high57°

Average low36°

Average precipitation0.05 in

Chance of precipitation22%

Record high76° (1966)

Record low-13° (2020)

Tue, 2756° / 33°

0.03

56 °

Foster, Tuesday, 27 October

Climate normal for this date — 60-year average.

Average high56°

Average low33°

Average precipitation0.03 in

Chance of precipitation17%

Record high77° (1986)

Record low6° (2020)

Wed, 2855° / 33°

0.05

55 °

Foster, Wednesday, 28 October

Climate normal for this date — 60-year average.

Average high55°

Average low33°

Average precipitation0.05 in

Chance of precipitation25%

Record high78° (1990)

Record low4° (2023)

Thu, 2954° / 33°

0.06

54 °

Foster, Thursday, 29 October

Climate normal for this date — 60-year average.

Average high54°

Average low33°

Average precipitation0.06 in

Chance of precipitation27%

Record high75° (1968)

Record low1° (1991)

Fri, 3053° / 31°

0.03

53 °

Foster, Friday, 30 October

Climate normal for this date — 60-year average.

Average high53°

Average low31°

Average precipitation0.03 in

Chance of precipitation20%

Record high74° (1990)

Record low-19° (1991)

Sat, 3153° / 32°

0.04

53 °

Foster, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high53°

Average low32°

Average precipitation0.04 in

Chance of precipitation17%

Record high77° (1999)

Record low-1° (1991)

Sun, 0152° / 32°

0.04

52 °

Foster, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high52°

Average low32°

Average precipitation0.04 in

Chance of precipitation13%

Record high74° (1965)

Record low-1° (1984)

Mon, 0252° / 31°

0.02

52 °

Foster, Monday, 2 November

Climate normal for this date — 60-year average.

Average high52°

Average low31°

Average precipitation0.02 in

Chance of precipitation17%

Record high76° (1965)

Record low-11° (1991)

Tue, 0352° / 31°

0.02

52 °

Foster, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high52°

Average low31°

Average precipitation0.02 in

Chance of precipitation15%

Record high72° (1962)

Record low-14° (1991)

Wed, 0454° / 32°

0.02

54 °

Foster, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high54°

Average low32°

Average precipitation0.02 in

Chance of precipitation15%

Record high73° (1978)

Record low4° (1995)

Thu, 0553° / 32°

0.04

53 °

Foster, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high53°

Average low32°

Average precipitation0.04 in

Chance of precipitation28%

Record high73° (2010)

Record low0° (1961)

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 Foster, 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 Foster, 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.