As of 21:31 MDT

Weather in Calypso, MT

45°

Calypso, Friday, 23 October, 21:31

Overcast. Feels like 37°. High 75°, low 45°.

Pressure29.97 inHg

Wind21.7 mph W

Humidity74%

Visibility6.2 mi

Dew point38°

See detailed hourly forecast

Monthly outlook for Calypso, MT: average high 59.8°, average low 41.3°. That is 4.3° above the climate normal for October. Precipitation is expected on 2 days (about 0.1 inches), against a normal of 2 days and 0.4 inches. The warmest day looks like 7 November (75.3°), the coolest 25 October (33.2°).

59.8°/41.3°

Average high / low

+4.3°

Above normal

2 / 2

Wet days / normal

0.1 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
23 October – 1 November	55.1°	53.6°	+0.8°
2 November – 11 November	67.6°	47.4°	+11.2°
12 November – 21 November	at normal	43.5°	—

October records over 66 years

92.7°1 October 2011All-time high

-14.6°30 October 1991All-time low

Climate normals and records are computed from the nearest reference point — Zero (8 mi).

Sat, 2453° / 35°

53 °

Calypso, Saturday, 24 October

Clear. High 53°, low 35°.

Pressure30.39 inHg

Wind9.8 mph W

Humidity52%

Visibility6.2 mi

Dew point21°

Sun, 2556° / 33°

56 °

Calypso, Sunday, 25 October

Clear. High 56°, low 33°.

Pressure30.42 inHg

Wind11.9 mph NE

Humidity47%

Visibility6.2 mi

Dew point22°

Mon, 2644° / 36°

0.07

44 °

Calypso, Monday, 26 October

Light rain. High 44°, low 36°.

Pressure30.39 inHg

Wind14.3 mph E

Humidity66%

Visibility6.2 mi

Dew point31°

Tue, 2738° / 34°

0.05

38 °

Calypso, Tuesday, 27 October

Light rain. High 38°, low 34°.

Pressure30.03 inHg

Wind5.2 mph E

Humidity84%

Visibility6.2 mi

Dew point31°

Wed, 2855° / 33°

55 °

Calypso, Wednesday, 28 October

Overcast. High 55°, low 33°.

Pressure29.97 inHg

Wind5.8 mph SW

Humidity66%

Visibility—

Dew point35°

Thu, 2958° / 37°

58 °

Calypso, Thursday, 29 October

Overcast. High 58°, low 37°.

Pressure29.97 inHg

Wind14.1 mph E

Humidity57%

Visibility—

Dew point35°

Fri, 3060° / 43°

60 °

Calypso, Friday, 30 October

Overcast. High 60°, low 43°.

Pressure29.88 inHg

Wind10.9 mph E

Humidity56%

Visibility—

Dew point38°

Sat, 3157° / 43°

57 °

Calypso, Saturday, 31 October

Partly cloudy. High 57°, low 43°.

Pressure29.91 inHg

Wind20 mph NW

Humidity30%

Visibility—

Dew point24°

Sun, 0156° / 37°

56 °

Calypso, Sunday, 1 November

Overcast. High 56°, low 37°.

Pressure30.21 inHg

Wind17.9 mph NW

Humidity28%

Visibility—

Dew point18°

Mon, 0256° / 42°

56 °

Calypso, Monday, 2 November

Overcast. High 56°, low 42°.

Pressure30.27 inHg

Wind13.3 mph NW

Humidity28%

Visibility—

Dew point19°

Tue, 0363° / 43°

63 °

Calypso, Tuesday, 3 November

Overcast. High 63°, low 43°.

Pressure29.94 inHg

Wind13.6 mph W

Humidity19%

Visibility—

Dew point13°

Wed, 0468° / 44°

68 °

Calypso, Wednesday, 4 November

Overcast. High 68°, low 44°.

Pressure29.83 inHg

Wind8.1 mph W

Humidity20%

Visibility—

Dew point18°

Thu, 0571° / 49°

71 °

Calypso, Thursday, 5 November

Clear. High 71°, low 49°.

Pressure29.77 inHg

Wind12 mph W

Humidity19%

Visibility—

Dew point22°

Fri, 0671° / 53°

71 °

Calypso, Friday, 6 November

Overcast. High 71°, low 53°.

Pressure30.06 inHg

Wind17.9 mph W

Humidity39%

Visibility—

Dew point40°

Sat, 0775° / 54°

75 °

Calypso, Saturday, 7 November

Overcast. High 75°, low 54°.

Pressure30.15 inHg

Wind13.8 mph SW

Humidity29%

Visibility—

Dew point34°

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

Sun, 0846° / 29°

0.02

46 °

Calypso, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high46°

Average low29°

Average precipitation0.02 in

Chance of precipitation20%

Record high72° (1999)

Record low-5° (2000)

Mon, 0945° / 28°

0.06

45 °

Calypso, Monday, 9 November

Climate normal for this date — 60-year average.

Average high45°

Average low28°

Average precipitation0.06 in

Chance of precipitation22%

Record high69° (2016)

Record low-3° (2000)

Tue, 1044° / 26°

0.05

44 °

Calypso, Tuesday, 10 November

Climate normal for this date — 60-year average.

Average high44°

Average low26°

Average precipitation0.05 in

Chance of precipitation18%

Record high68° (1989)

Record low-8° (1986)

Wed, 1143° / 25°

0.01

43 °

Calypso, Wednesday, 11 November

Climate normal for this date — 60-year average.

Average high43°

Average low25°

Average precipitation0.01 in

Chance of precipitation8%

Record high65° (2016)

Record low-6° (2022)

Thu, 1245° / 26°

0.02

45 °

Calypso, Thursday, 12 November

Climate normal for this date — 60-year average.

Average high45°

Average low26°

Average precipitation0.02 in

Chance of precipitation12%

Record high74° (1999)

Record low-5° (2000)

Fri, 1345° / 28°

0.02

45 °

Calypso, Friday, 13 November

Climate normal for this date — 60-year average.

Average high45°

Average low28°

Average precipitation0.02 in

Chance of precipitation18%

Record high65° (2025)

Record low-11° (1986)

Sat, 1445° / 28°

0.02

45 °

Calypso, Saturday, 14 November

Climate normal for this date — 60-year average.

Average high45°

Average low28°

Average precipitation0.02 in

Chance of precipitation12%

Record high67° (1999)

Record low-13° (2014)

Sun, 1545° / 26°

0.01

45 °

Calypso, Sunday, 15 November

Climate normal for this date — 60-year average.

Average high45°

Average low26°

Average precipitation0.01 in

Chance of precipitation5%

Record high65° (2001)

Record low-7° (2014)

Mon, 1645° / 27°

0.01

45 °

Calypso, Monday, 16 November

Climate normal for this date — 60-year average.

Average high45°

Average low27°

Average precipitation0.01 in

Chance of precipitation15%

Record high65° (2001)

Record low-1° (2000)

Tue, 1743° / 27°

0.02

43 °

Calypso, Tuesday, 17 November

Climate normal for this date — 60-year average.

Average high43°

Average low27°

Average precipitation0.02 in

Chance of precipitation15%

Record high64° (1976)

Record low-2° (1996)

Wed, 1844° / 26°

0.03

44 °

Calypso, Wednesday, 18 November

Climate normal for this date — 60-year average.

Average high44°

Average low26°

Average precipitation0.03 in

Chance of precipitation17%

Record high66° (2008)

Record low-1° (2022)

Thu, 1942° / 26°

0.03

42 °

Calypso, Thursday, 19 November

Climate normal for this date — 60-year average.

Average high42°

Average low26°

Average precipitation0.03 in

Chance of precipitation15%

Record high66° (2003)

Record low1° (1978)

Fri, 2042° / 24°

0.02

42 °

Calypso, Friday, 20 November

Climate normal for this date — 60-year average.

Average high42°

Average low24°

Average precipitation0.02 in

Chance of precipitation8%

Record high61° (2001)

Record low-12° (1985)

Sat, 2140° / 23°

0.02

40 °

Calypso, Saturday, 21 November

Climate normal for this date — 60-year average.

Average high40°

Average low23°

Average precipitation0.02 in

Chance of precipitation17%

Record high61° (2006)

Record low-18° (1977)

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 Calypso, 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 Calypso, 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.