As of 05:47 MDT

Weather in Bighorn, MT

42°

Bighorn, Tuesday, 20 October, 05:47

Partly cloudy. Feels like 40°. High 68°, low 42°.

Pressure29.97 inHg

Wind4.1 mph SW

Humidity85%

Visibility6.2 mi

Dew point38°

See detailed hourly forecast

Monthly outlook for Bighorn, MT: average high 57.1°, average low 36.8°. That is 0.9° above the climate normal for October. Precipitation is expected on 2 days (about 0.5 inches), against a normal of 3 days and 0.5 inches. The warmest day looks like 22 October (72.9°), the coolest 27 October (25.5°).

57.1°/36.8°

Average high / low

+0.9°

Above normal

2 / 3

Wet days / normal

0.5 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
20 October – 29 October	55.8°	57.5°	-0.9°
30 October – 8 November	59.1°	51.2°	+4.4°
9 November – 18 November	at normal	46.4°	—

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).

Wed, 2170° / 40°

70 °

Bighorn, Wednesday, 21 October

Clear. High 70°, low 40°.

Pressure30.12 inHg

Wind1 mph S

Humidity60%

Visibility6.2 mi

Dew point44°

Thu, 2273° / 44°

73 °

Bighorn, Thursday, 22 October

Clear. High 73°, low 44°.

Pressure29.91 inHg

Wind9.7 mph SW

Humidity45%

Visibility6.2 mi

Dew point46°

Fri, 2366° / 43°

0.19

66 °

Bighorn, Friday, 23 October

Light rain. High 66°, low 43°.

Pressure29.59 inHg

Wind3.6 mph W

Humidity55%

Visibility6.2 mi

Dew point49°

Sat, 2448° / 36°

0.3

48 °

Bighorn, Saturday, 24 October

Rain. High 48°, low 36°.

Pressure30.42 inHg

Wind15.5 mph NW

Humidity56%

Visibility—

Dew point29°

Sun, 2551° / 30°

51 °

Bighorn, Sunday, 25 October

Clear. High 51°, low 30°.

Pressure30.39 inHg

Wind10.5 mph N

Humidity53%

Visibility—

Dew point29°

Mon, 2644° / 31°

44 °

Bighorn, Monday, 26 October

Clear. High 44°, low 31°.

Pressure30.53 inHg

Wind9.5 mph NE

Humidity47%

Visibility—

Dew point20°

Tue, 2742° / 25°

42 °

Bighorn, Tuesday, 27 October

Clear. High 42°, low 25°.

Pressure30.74 inHg

Wind6 mph NE

Humidity43%

Visibility—

Dew point15°

Wed, 2848° / 29°

48 °

Bighorn, Wednesday, 28 October

Mostly clear. High 48°, low 29°.

Pressure30.33 inHg

Wind9.3 mph N

Humidity28%

Visibility—

Dew point13°

Thu, 2948° / 30°

48 °

Bighorn, Thursday, 29 October

Clear. High 48°, low 30°.

Pressure30.09 inHg

Wind6 mph NE

Humidity29%

Visibility—

Dew point12°

Fri, 3051° / 30°

51 °

Bighorn, Friday, 30 October

Partly cloudy. High 51°, low 30°.

Pressure29.97 inHg

Wind6.2 mph NE

Humidity28%

Visibility—

Dew point13°

Sat, 3155° / 35°

55 °

Bighorn, Saturday, 31 October

Overcast. High 55°, low 35°.

Pressure29.97 inHg

Wind11.1 mph E

Humidity26%

Visibility—

Dew point13°

Sun, 0158° / 37°

0.01

58 °

Bighorn, Sunday, 1 November

Light rain. High 58°, low 37°.

Pressure29.94 inHg

Wind11.8 mph SW

Humidity35%

Visibility—

Dew point26°

Mon, 0263° / 46°

63 °

Bighorn, Monday, 2 November

Overcast. High 63°, low 46°.

Pressure30.18 inHg

Wind20.9 mph W

Humidity30%

Visibility—

Dew point26°

Tue, 0364° / 44°

64 °

Bighorn, Tuesday, 3 November

Partly cloudy. High 64°, low 44°.

Pressure30.06 inHg

Wind7.8 mph SW

Humidity27%

Visibility—

Dew point23°

Wed, 0464° / 47°

64 °

Bighorn, Wednesday, 4 November

Overcast. High 64°, low 47°.

Pressure29.68 inHg

Wind7.7 mph NE

Humidity26%

Visibility—

Dew point23°

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

Thu, 0552° / 33°

0.03

52 °

Bighorn, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high52°

Average low33°

Average precipitation0.03 in

Chance of precipitation23%

Record high73° (2020)

Record low4° (1961)

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)

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.