As of 20:01 MDT

Weather in Harlem, MT

59°

Harlem, Thursday, 8 October, 20:01

Mostly clear. Feels like 57°. High 75°, low 43°.

Pressure29.85 inHg

Wind6 mph E

Humidity48%

Visibility6.2 mi

Dew point38°

See detailed hourly forecast

Monthly outlook for Harlem, MT: average high 57.1°, average low 38.5°. That is 0° above the climate normal for October. Precipitation is expected on 2 days (about 0.6 inches), against a normal of 2 days and 0.4 inches. The warmest day looks like 9 October (81.1°), the coolest 16 October (28°).

57.1°/38.5°

Average high / low

+0°

Above normal

2 / 2

Wet days / normal

0.6 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
8 October – 17 October	53.5°	57.5°	-2.2°
18 October – 27 October	63°	54.9°	+4.5°
28 October – 6 November	at normal	47.8°	—

October records over 66 years

86.2°3 October 1987All-time high

-9.9°30 October 1991All-time low

Climate normals and records are computed from the nearest reference point — North Harlem Colony (4 mi).

Fri, 0981° / 48°

81 °

Harlem, Friday, 9 October

Partly cloudy. High 81°, low 48°.

Pressure29.47 inHg

Wind4.1 mph E

Humidity27%

Visibility6.2 mi

Dew point37°

Sat, 1052° / 41°

52 °

Harlem, Saturday, 10 October

Overcast. High 52°, low 41°.

Pressure29.77 inHg

Wind11.5 mph NW

Humidity55%

Visibility6.2 mi

Dew point33°

Sun, 1140° / 36°

0.16

40 °

Harlem, Sunday, 11 October

Snow. High 40°, low 36°.

Pressure30.18 inHg

Wind12.3 mph NE

Humidity85%

Visibility4.2 mi

Dew point34°

Mon, 1235° / 33°

0.44

35 °

Harlem, Monday, 12 October

Snow. High 35°, low 33°.

Pressure30.18 inHg

Wind1 mph N

Humidity91%

Visibility2.7 mi

Dew point32°

Tue, 1342° / 29°

42 °

Harlem, Tuesday, 13 October

Overcast. High 42°, low 29°.

Pressure30.21 inHg

Wind7.5 mph E

Humidity92%

Visibility—

Dew point31°

Wed, 1453° / 31°

53 °

Harlem, Wednesday, 14 October

Partly cloudy. High 53°, low 31°.

Pressure29.85 inHg

Wind14.7 mph NW

Humidity54%

Visibility—

Dew point30°

Thu, 1547° / 35°

47 °

Harlem, Thursday, 15 October

Overcast. High 47°, low 35°.

Pressure30.39 inHg

Wind23.8 mph N

Humidity75%

Visibility—

Dew point33°

Fri, 1651° / 28°

51 °

Harlem, Friday, 16 October

Clear. High 51°, low 28°.

Pressure30.53 inHg

Wind10.6 mph S

Humidity38%

Visibility—

Dew point18°

Sat, 1760° / 38°

60 °

Harlem, Saturday, 17 October

Mostly clear. High 60°, low 38°.

Pressure30.06 inHg

Wind23 mph W

Humidity23%

Visibility—

Dew point17°

Sun, 1858° / 39°

58 °

Harlem, Sunday, 18 October

Clear. High 58°, low 39°.

Pressure30.42 inHg

Wind14.4 mph SE

Humidity28%

Visibility—

Dew point20°

Mon, 1969° / 42°

69 °

Harlem, Monday, 19 October

Clear. High 69°, low 42°.

Pressure29.91 inHg

Wind13.8 mph SE

Humidity25%

Visibility—

Dew point22°

Tue, 2060° / 47°

60 °

Harlem, Tuesday, 20 October

Mostly clear. High 60°, low 47°.

Pressure30.03 inHg

Wind22.3 mph W

Humidity35%

Visibility—

Dew point28°

Wed, 2156° / 45°

56 °

Harlem, Wednesday, 21 October

Overcast. High 56°, low 45°.

Pressure30.24 inHg

Wind8.4 mph E

Humidity31%

Visibility—

Dew point23°

Thu, 2261° / 40°

61 °

Harlem, Thursday, 22 October

Mostly clear. High 61°, low 40°.

Pressure30.24 inHg

Wind13.2 mph SE

Humidity36%

Visibility—

Dew point27°

Fri, 2373° / 43°

73 °

Harlem, Friday, 23 October

Clear. High 73°, low 43°.

Pressure29.74 inHg

Wind26.4 mph W

Humidity16%

Visibility—

Dew point20°

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

Sat, 2454° / 34°

0.02

54 °

Harlem, Saturday, 24 October

Climate normal for this date — 60-year average.

Average high54°

Average low34°

Average precipitation0.02 in

Chance of precipitation15%

Record high77° (2007)

Record low15° (2020)

Sun, 2554° / 35°

0.02

54 °

Harlem, Sunday, 25 October

Climate normal for this date — 60-year average.

Average high54°

Average low35°

Average precipitation0.02 in

Chance of precipitation10%

Record high75° (1990)

Record low8° (2020)

Mon, 2652° / 35°

0.04

52 °

Harlem, Monday, 26 October

Climate normal for this date — 60-year average.

Average high52°

Average low35°

Average precipitation0.04 in

Chance of precipitation18%

Record high73° (1983)

Record low7° (2020)

Tue, 2751° / 33°

0.03

51 °

Harlem, Tuesday, 27 October

Climate normal for this date — 60-year average.

Average high51°

Average low33°

Average precipitation0.03 in

Chance of precipitation13%

Record high73° (2024)

Record low9° (2023)

Wed, 2850° / 31°

0.02

50 °

Harlem, Wednesday, 28 October

Climate normal for this date — 60-year average.

Average high50°

Average low31°

Average precipitation0.02 in

Chance of precipitation15%

Record high73° (1968)

Record low-1° (1984)

Thu, 2949° / 31°

0.02

49 °

Harlem, Thursday, 29 October

Climate normal for this date — 60-year average.

Average high49°

Average low31°

Average precipitation0.02 in

Chance of precipitation17%

Record high75° (1968)

Record low-9° (1991)

Fri, 3049° / 30°

0.02

49 °

Harlem, Friday, 30 October

Climate normal for this date — 60-year average.

Average high49°

Average low30°

Average precipitation0.02 in

Chance of precipitation13%

Record high70° (1983)

Record low-10° (1991)

Sat, 3148° / 30°

0.03

48 °

Harlem, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high48°

Average low30°

Average precipitation0.03 in

Chance of precipitation17%

Record high68° (1987)

Record low-5° (1984)

Sun, 0147° / 30°

0.01

47 °

Harlem, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high47°

Average low30°

Average precipitation0.01 in

Chance of precipitation12%

Record high69° (1965)

Record low-21° (1984)

Mon, 0247° / 29°

0.02

47 °

Harlem, Monday, 2 November

Climate normal for this date — 60-year average.

Average high47°

Average low29°

Average precipitation0.02 in

Chance of precipitation15%

Record high68° (1965)

Record low-11° (1991)

Tue, 0347° / 30°

0.02

47 °

Harlem, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high47°

Average low30°

Average precipitation0.02 in

Chance of precipitation13%

Record high69° (2020)

Record low-14° (1991)

Wed, 0448° / 30°

0.02

48 °

Harlem, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high48°

Average low30°

Average precipitation0.02 in

Chance of precipitation15%

Record high70° (1975)

Record low8° (2003)

Thu, 0547° / 29°

0.03

47 °

Harlem, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high47°

Average low29°

Average precipitation0.03 in

Chance of precipitation20%

Record high71° (2020)

Record low-3° (2003)

Fri, 0645° / 28°

0.02

45 °

Harlem, Friday, 6 November

Climate normal for this date — 60-year average.

Average high45°

Average low28°

Average precipitation0.02 in

Chance of precipitation13%

Record high67° (2010)

Record low0° (1991)

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 Harlem, 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 Harlem, 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.