As of 17:37 MDT

Weather in Hamilton, MT

68°

Hamilton, Thursday, 8 October, 17:37

Overcast. Feels like 67°. High 70°, low 40°.

Pressure29.94 inHg

Wind1 mph N

Humidity42%

Visibility6.2 mi

Dew point44°

See detailed hourly forecast

Monthly outlook for Hamilton, MT: average high 54.3°, average low 36.9°. That is 2.1° below the climate normal for October. Precipitation is expected on 6 days (about 1.3 inches), against a normal of 5 days and 0.9 inches. The warmest day looks like 9 October (70.8°), the coolest 16 October (24.5°).

54.3°/36.9°

Average high / low

−2.1°

Below normal

6 / 5

Wet days / normal

1.3 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
8 October – 17 October	50.9°	58.9°	-4.4°
18 October – 27 October	60.1°	55.1°	+2.7°
28 October – 6 November	at normal	48.5°	—

October records over 66 years

88.3°3 October 2010All-time high

-5.4°26 October 2020All-time low

Climate normals and records are computed from the nearest reference point — Corvallis (5 mi).

Fri, 0971° / 45°

71 °

Hamilton, Friday, 9 October

Overcast. High 71°, low 45°.

Pressure29.59 inHg

Wind4.7 mph S

Humidity31%

Visibility6.2 mi

Dew point39°

Sat, 1044° / 34°

0.56

44 °

Hamilton, Saturday, 10 October

Snow. High 44°, low 34°.

Pressure29.77 inHg

Wind5.2 mph N

Humidity93%

Visibility2.3 mi

Dew point41°

Sun, 1138° / 31°

0.22

38 °

Hamilton, Sunday, 11 October

Snow. High 38°, low 31°.

Pressure30.00 inHg

Wind8 mph N

Humidity85%

Visibility6.2 mi

Dew point27°

Mon, 1243° / 30°

0.15

43 °

Hamilton, Monday, 12 October

Snow. High 43°, low 30°.

Pressure30.00 inHg

Wind1.1 mph NW

Humidity82%

Visibility6.2 mi

Dew point32°

Tue, 1352° / 32°

52 °

Hamilton, Tuesday, 13 October

Clear. High 52°, low 32°.

Pressure30.03 inHg

Wind2.1 mph W

Humidity74%

Visibility—

Dew point35°

Wed, 1446° / 34°

0.06

46 °

Hamilton, Wednesday, 14 October

Snow. High 46°, low 34°.

Pressure29.88 inHg

Wind9.6 mph W

Humidity60%

Visibility—

Dew point30°

Thu, 1543° / 31°

0.19

43 °

Hamilton, Thursday, 15 October

Snow. High 43°, low 31°.

Pressure30.50 inHg

Wind8.1 mph N

Humidity70%

Visibility—

Dew point32°

Fri, 1646° / 24°

46 °

Hamilton, Friday, 16 October

Mostly clear. High 46°, low 24°.

Pressure30.65 inHg

Wind4.8 mph N

Humidity54%

Visibility—

Dew point21°

Sat, 1756° / 29°

56 °

Hamilton, Saturday, 17 October

Clear. High 56°, low 29°.

Pressure30.30 inHg

Wind4 mph NW

Humidity45%

Visibility—

Dew point26°

Sun, 1847° / 40°

0.15

47 °

Hamilton, Sunday, 18 October

Light rain. High 47°, low 40°.

Pressure30.09 inHg

Wind4.8 mph SW

Humidity93%

Visibility—

Dew point44°

Mon, 1949° / 42°

0.01

49 °

Hamilton, Monday, 19 October

Light rain. High 49°, low 42°.

Pressure30.24 inHg

Wind4.3 mph SW

Humidity95%

Visibility—

Dew point44°

Tue, 2063° / 40°

63 °

Hamilton, Tuesday, 20 October

Clear. High 63°, low 40°.

Pressure30.18 inHg

Wind4.1 mph S

Humidity57%

Visibility—

Dew point39°

Wed, 2167° / 45°

67 °

Hamilton, Wednesday, 21 October

Overcast. High 67°, low 45°.

Pressure30.12 inHg

Wind4 mph S

Humidity42%

Visibility—

Dew point35°

Thu, 2269° / 46°

69 °

Hamilton, Thursday, 22 October

Clear. High 69°, low 46°.

Pressure30.09 inHg

Wind4 mph S

Humidity37%

Visibility—

Dew point34°

Fri, 2365° / 47°

65 °

Hamilton, Friday, 23 October

Overcast. High 65°, low 47°.

Pressure29.97 inHg

Wind3.8 mph SW

Humidity36%

Visibility—

Dew point30°

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

Sat, 2454° / 34°

0.06

54 °

Hamilton, Saturday, 24 October

Climate normal for this date — 60-year average.

Average high54°

Average low34°

Average precipitation0.06 in

Chance of precipitation32%

Record high71° (2005)

Record low8° (1975)

Sun, 2553° / 34°

0.09

53 °

Hamilton, Sunday, 25 October

Climate normal for this date — 60-year average.

Average high53°

Average low34°

Average precipitation0.09 in

Chance of precipitation33%

Record high72° (2005)

Record low-1° (2020)

Mon, 2652° / 33°

0.08

52 °

Hamilton, Monday, 26 October

Climate normal for this date — 60-year average.

Average high52°

Average low33°

Average precipitation0.08 in

Chance of precipitation37%

Record high70° (2024)

Record low-5° (2020)

Tue, 2752° / 32°

0.07

52 °

Hamilton, Tuesday, 27 October

Climate normal for this date — 60-year average.

Average high52°

Average low32°

Average precipitation0.07 in

Chance of precipitation28%

Record high66° (2024)

Record low8° (1996)

Wed, 2851° / 32°

0.07

51 °

Hamilton, Wednesday, 28 October

Climate normal for this date — 60-year average.

Average high51°

Average low32°

Average precipitation0.07 in

Chance of precipitation32%

Record high67° (1987)

Record low9° (1971)

Thu, 2950° / 32°

0.06

50 °

Hamilton, Thursday, 29 October

Climate normal for this date — 60-year average.

Average high50°

Average low32°

Average precipitation0.06 in

Chance of precipitation27%

Record high68° (1964)

Record low6° (1971)

Fri, 3049° / 31°

0.04

49 °

Hamilton, Friday, 30 October

Climate normal for this date — 60-year average.

Average high49°

Average low31°

Average precipitation0.04 in

Chance of precipitation28%

Record high67° (2008)

Record low5° (1991)

Sat, 3148° / 31°

0.08

48 °

Hamilton, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high48°

Average low31°

Average precipitation0.08 in

Chance of precipitation28%

Record high67° (2008)

Record low0° (1996)

Sun, 0149° / 31°

0.07

49 °

Hamilton, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high49°

Average low31°

Average precipitation0.07 in

Chance of precipitation33%

Record high69° (2025)

Record low6° (1991)

Mon, 0248° / 30°

0.08

48 °

Hamilton, Monday, 2 November

Climate normal for this date — 60-year average.

Average high48°

Average low30°

Average precipitation0.08 in

Chance of precipitation40%

Record high67° (2020)

Record low-13° (1991)

Tue, 0348° / 29°

0.05

48 °

Hamilton, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high48°

Average low29°

Average precipitation0.05 in

Chance of precipitation23%

Record high67° (2020)

Record low1° (1973)

Wed, 0448° / 30°

0.07

48 °

Hamilton, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high48°

Average low30°

Average precipitation0.07 in

Chance of precipitation47%

Record high64° (2021)

Record low1° (1973)

Thu, 0548° / 30°

0.08

48 °

Hamilton, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high48°

Average low30°

Average precipitation0.08 in

Chance of precipitation37%

Record high68° (2020)

Record low0° (1961)

Fri, 0646° / 30°

0.09

46 °

Hamilton, Friday, 6 November

Climate normal for this date — 60-year average.

Average high46°

Average low30°

Average precipitation0.09 in

Chance of precipitation48%

Record high65° (2012)

Record low1° (1971)

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 Hamilton, 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 Hamilton, 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.