As of 04:40 MDT

Weather in Bighorn, MT

42°

Bighorn, Wednesday, 21 October, 04:40

Clear. Feels like 42°. High 69°, low 41°.

Pressure30.15 inHg

Wind1.2 mph NE

Humidity88%

Visibility6.2 mi

Dew point38°

See detailed hourly forecast

Monthly outlook for Bighorn, MT: average high 55.1°, average low 37.1°. That is 0.2° above the climate normal for October. Precipitation is expected on 3 days (about 3.2 inches), against a normal of 3 days and 0.5 inches. The warmest day looks like 22 October (73.8°), the coolest 5 November (21.8°).

55.1°/37.1°

Average high / low

+0.2°

Above normal

3 / 3

Wet days / normal

3.2 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
21 October – 30 October	57°	56.6°	+0.3°
31 October – 9 November	52°	50.6°	+0.8°
10 November – 19 November	at normal	46.1°	—

October records over 66 years

93°1 October 2011All-time high

-20°30 October 1991All-time low

Climate normals and records are computed from the nearest reference point — Hysham (14 mi).

Thu, 2274° / 45°

74 °

Bighorn, Thursday, 22 October

Clear. High 74°, low 45°.

Pressure29.91 inHg

Wind8.4 mph SW

Humidity47%

Visibility6.2 mi

Dew point46°

Fri, 2371° / 42°

71 °

Bighorn, Friday, 23 October

Mostly clear. High 71°, low 42°.

Pressure29.59 inHg

Wind2.6 mph SW

Humidity57%

Visibility6.2 mi

Dew point49°

Sat, 2448° / 39°

48 °

Bighorn, Saturday, 24 October

Clear. High 48°, low 39°.

Pressure30.45 inHg

Wind5.3 mph N

Humidity59%

Visibility6.2 mi

Dew point26°

Sun, 2555° / 33°

55 °

Bighorn, Sunday, 25 October

Clear. High 55°, low 33°.

Pressure30.33 inHg

Wind7.9 mph NE

Humidity53%

Visibility—

Dew point30°

Mon, 2657° / 35°

57 °

Bighorn, Monday, 26 October

Clear. High 57°, low 35°.

Pressure30.33 inHg

Wind13 mph E

Humidity59%

Visibility—

Dew point34°

Tue, 2740° / 35°

0.11

40 °

Bighorn, Tuesday, 27 October

Snow. High 40°, low 35°.

Pressure30.12 inHg

Wind14.2 mph NW

Humidity78%

Visibility—

Dew point33°

Wed, 2847° / 35°

0.02

47 °

Bighorn, Wednesday, 28 October

Light snow. High 47°, low 35°.

Pressure30.39 inHg

Wind17.5 mph NW

Humidity35%

Visibility—

Dew point17°

Thu, 2951° / 31°

51 °

Bighorn, Thursday, 29 October

Overcast. High 51°, low 31°.

Pressure30.21 inHg

Wind7.4 mph E

Humidity34%

Visibility—

Dew point18°

Fri, 3058° / 36°

58 °

Bighorn, Friday, 30 October

Clear. High 58°, low 36°.

Pressure29.88 inHg

Wind5.9 mph S

Humidity34%

Visibility—

Dew point22°

Sat, 3164° / 44°

64 °

Bighorn, Saturday, 31 October

Mostly clear. High 64°, low 44°.

Pressure29.68 inHg

Wind7.8 mph SW

Humidity33%

Visibility—

Dew point28°

Sun, 0166° / 48°

66 °

Bighorn, Sunday, 1 November

Partly cloudy. High 66°, low 48°.

Pressure29.74 inHg

Wind11.6 mph SW

Humidity30%

Visibility—

Dew point28°

Mon, 0265° / 49°

65 °

Bighorn, Monday, 2 November

Partly cloudy. High 65°, low 49°.

Pressure29.68 inHg

Wind9 mph NE

Humidity34%

Visibility—

Dew point31°

Tue, 0352° / 30°

1.79

52 °

Bighorn, Tuesday, 3 November

Snow. High 52°, low 30°.

Pressure29.83 inHg

Wind32 mph NW

Humidity95%

Visibility—

Dew point37°

Wed, 0431° / 29°

1.24

31 °

Bighorn, Wednesday, 4 November

Snow. High 31°, low 29°.

Pressure30.21 inHg

Wind24.4 mph N

Humidity97%

Visibility—

Dew point29°

Thu, 0533° / 22°

0.01

33 °

Bighorn, Thursday, 5 November

Light snow. High 33°, low 22°.

Pressure30.42 inHg

Wind6.7 mph W

Humidity78%

Visibility—

Dew point24°

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

Fri, 0650° / 31°

0.03

50 °

Bighorn, Friday, 6 November

Climate normal for this date — 60-year average.

Average high50°

Average low31°

Average precipitation0.03 in

Chance of precipitation17%

Record high73° (2010)

Record low10° (1991)

Sat, 0749° / 31°

0.02

49 °

Bighorn, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high49°

Average low31°

Average precipitation0.02 in

Chance of precipitation13%

Record high73° (1999)

Record low-2° (1991)

Sun, 0849° / 30°

0.04

49 °

Bighorn, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high49°

Average low30°

Average precipitation0.04 in

Chance of precipitation22%

Record high77° (1999)

Record low3° (1966)

Mon, 0947° / 29°

0.07

47 °

Bighorn, Monday, 9 November

Climate normal for this date — 60-year average.

Average high47°

Average low29°

Average precipitation0.07 in

Chance of precipitation22%

Record high69° (2016)

Record low-1° (1966)

Tue, 1046° / 27°

0.05

46 °

Bighorn, Tuesday, 10 November

Climate normal for this date — 60-year average.

Average high46°

Average low27°

Average precipitation0.05 in

Chance of precipitation18%

Record high71° (2007)

Record low-19° (1986)

Wed, 1145° / 26°

0.02

45 °

Bighorn, Wednesday, 11 November

Climate normal for this date — 60-year average.

Average high45°

Average low26°

Average precipitation0.02 in

Chance of precipitation23%

Record high71° (1990)

Record low-7° (2019)

Thu, 1247° / 27°

0.02

47 °

Bighorn, Thursday, 12 November

Climate normal for this date — 60-year average.

Average high47°

Average low27°

Average precipitation0.02 in

Chance of precipitation15%

Record high76° (1999)

Record low-16° (1986)

Fri, 1347° / 29°

0.03

47 °

Bighorn, Friday, 13 November

Climate normal for this date — 60-year average.

Average high47°

Average low29°

Average precipitation0.03 in

Chance of precipitation17%

Record high71° (1990)

Record low-21° (1986)

Sat, 1447° / 28°

0.02

47 °

Bighorn, Saturday, 14 November

Climate normal for this date — 60-year average.

Average high47°

Average low28°

Average precipitation0.02 in

Chance of precipitation25%

Record high70° (1999)

Record low0° (2014)

Sun, 1547° / 28°

0.01

47 °

Bighorn, Sunday, 15 November

Climate normal for this date — 60-year average.

Average high47°

Average low28°

Average precipitation0.01 in

Chance of precipitation10%

Record high69° (2021)

Record low0° (2014)

Mon, 1648° / 29°

0.02

48 °

Bighorn, Monday, 16 November

Climate normal for this date — 60-year average.

Average high48°

Average low29°

Average precipitation0.02 in

Chance of precipitation13%

Record high68° (2001)

Record low1° (1978)

Tue, 1746° / 28°

0.02

46 °

Bighorn, Tuesday, 17 November

Climate normal for this date — 60-year average.

Average high46°

Average low28°

Average precipitation0.02 in

Chance of precipitation15%

Record high67° (1976)

Record low6° (1996)

Wed, 1846° / 27°

0.04

46 °

Bighorn, Wednesday, 18 November

Climate normal for this date — 60-year average.

Average high46°

Average low27°

Average precipitation0.04 in

Chance of precipitation25%

Record high65° (2008)

Record low-3° (2022)

Thu, 1944° / 27°

0.04

44 °

Bighorn, Thursday, 19 November

Climate normal for this date — 60-year average.

Average high44°

Average low27°

Average precipitation0.04 in

Chance of precipitation22%

Record high66° (2003)

Record low1° (1978)

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 Bighorn, 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 Bighorn, 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.