Monthly outlook for Calypso, MT: average high 55.1°, average low 40.5°. That is 3.3° above the climate normal for October. Precipitation is expected on 2 days (about 0.7 inches), against a normal of 2 days and 0.4 inches. The warmest day looks like 8 November (59.9°), the coolest 29 October (32.8°).
55.1°/40.5°
Average high / low
+3.3°
Above normal
2 / 2
Wet days / normal
0.7 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
27 October – 5 November
54.3°
51.2°
+1.7°
6 November – 15 November
56.4°
45.4°
+6.1°
16 November – 25 November
at normal
40.9°
—
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).
Wed, 2856° / 33°0
56 °
Calypso, Wednesday, 28 October
Clear. High 56°, low 33°.
Pressure29.94 inHg
Wind13.4 mph W
Humidity43%
Visibility6.2 mi
Dew point29°
Thu, 2952° / 33°0
52 °
Calypso, Thursday, 29 October
Clear. High 52°, low 33°.
Pressure30.15 inHg
Wind8.7 mph NE
Humidity58%
Visibility6.2 mi
Dew point33°
Fri, 3054° / 34°0
54 °
Calypso, Friday, 30 October
Overcast. High 54°, low 34°.
Pressure30.18 inHg
Wind13.9 mph E
Humidity62%
Visibility6.2 mi
Dew point34°
Sat, 3154° / 44°0
54 °
Calypso, Saturday, 31 October
Overcast. High 54°, low 44°.
Pressure29.97 inHg
Wind8.5 mph E
Humidity90%
Visibility—
Dew point49°
Sun, 0154° / 45°0.03
54 °
Calypso, Sunday, 1 November
Light rain. High 54°, low 45°.
Pressure29.83 inHg
Wind9.2 mph N
Humidity95%
Visibility—
Dew point49°
Mon, 0252° / 44°0.53
52 °
Calypso, Monday, 2 November
Rain. High 52°, low 44°.
Pressure30.09 inHg
Wind16.2 mph NW
Humidity92%
Visibility—
Dew point47°
Tue, 0355° / 44°0
55 °
Calypso, Tuesday, 3 November
Overcast. High 55°, low 44°.
Pressure30.36 inHg
Wind9.3 mph SW
Humidity59%
Visibility—
Dew point35°
Wed, 0458° / 43°0
58 °
Calypso, Wednesday, 4 November
Partly cloudy. High 58°, low 43°.
Pressure30.09 inHg
Wind6.1 mph SW
Humidity39%
Visibility—
Dew point28°
Thu, 0553° / 42°0
53 °
Calypso, Thursday, 5 November
Overcast. High 53°, low 42°.
Pressure30.18 inHg
Wind9.8 mph E
Humidity54%
Visibility—
Dew point32°
Fri, 0656° / 41°0
56 °
Calypso, Friday, 6 November
Overcast. High 56°, low 41°.
Pressure30.03 inHg
Wind9.4 mph SE
Humidity57%
Visibility—
Dew point34°
Sat, 0756° / 42°0
56 °
Calypso, Saturday, 7 November
Clear. High 56°, low 42°.
Pressure29.80 inHg
Wind11.5 mph N
Humidity40%
Visibility—
Dew point29°
Sun, 0860° / 38°0
60 °
Calypso, Sunday, 8 November
Clear. High 60°, low 38°.
Pressure29.91 inHg
Wind9.7 mph SW
Humidity41%
Visibility—
Dew point28°
Mon, 0958° / 44°0
58 °
Calypso, Monday, 9 November
Overcast. High 58°, low 44°.
Pressure29.88 inHg
Wind14.6 mph W
Humidity44%
Visibility—
Dew point34°
Tue, 1054° / 43°0
54 °
Calypso, Tuesday, 10 November
Overcast. High 54°, low 43°.
Pressure29.91 inHg
Wind15.2 mph W
Humidity47%
Visibility—
Dew point32°
Wed, 1155° / 43°0
55 °
Calypso, Wednesday, 11 November
Overcast. High 55°, low 43°.
Pressure29.85 inHg
Wind17.5 mph W
Humidity41%
Visibility—
Dew point29°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Sun, 2239° / 23°0.02
39 °
Calypso, Sunday, 22 November
Climate normal for this date — 60-year average.
Average high39°
Average low23°
Average precipitation0.02 in
Chance of precipitation18%
Record high62° (2017)
Record low-9° (1977)
Mon, 2339° / 22°0.02
39 °
Calypso, Monday, 23 November
Climate normal for this date — 60-year average.
Average high39°
Average low22°
Average precipitation0.02 in
Chance of precipitation13%
Record high60° (1990)
Record low-24° (1985)
Tue, 2439° / 23°0.02
39 °
Calypso, Tuesday, 24 November
Climate normal for this date — 60-year average.
Average high39°
Average low23°
Average precipitation0.02 in
Chance of precipitation15%
Record high59° (1986)
Record low-20° (1985)
Wed, 2537° / 22°0.04
37 °
Calypso, Wednesday, 25 November
Climate normal for this date — 60-year average.
Average high37°
Average low22°
Average precipitation0.04 in
Chance of precipitation30%
Record high65° (1960)
Record low-14° (1993)
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.