Weather in Calypso, MT
Calypso, Sunday, 18 October, 08:01
Clear. Feels like 40°. High 61°, low 40°.
Monthly outlook for Calypso, MT: average high 55.3°, average low 38.1°. That is 0.1° above the climate normal for October. Precipitation is expected on 4 days (about 0.6 inches), against a normal of 2 days and 0.4 inches. The warmest day looks like 22 October (76.1°), the coolest 31 October (24.3°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 18 October – 27 October | 62.5° | 57.4° | +2.8° |
| 28 October – 6 November | 43.2° | 50.6° | -4.1° |
| 7 November – 16 November | at normal | 45° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Zero (8 mi).
0Calypso, Monday, 19 October
Clear. High 68°, low 39°.
0
Calypso, Tuesday, 20 October
Partly cloudy. High 67°, low 41°.
0
Calypso, Wednesday, 21 October
Overcast. High 64°, low 42°.
0Calypso, Thursday, 22 October
Clear. High 76°, low 50°.
0.09
Calypso, Friday, 23 October
Light rain. High 72°, low 49°.
0.01Calypso, Saturday, 24 October
Light rain. High 47°, low 40°.
0Calypso, Sunday, 25 October
Overcast. High 57°, low 38°.
0
Calypso, Monday, 26 October
Mostly clear. High 56°, low 39°.
0.07Calypso, Tuesday, 27 October
Light rain. High 55°, low 43°.
0.29Calypso, Wednesday, 28 October
Rain. High 46°, low 39°.
0Calypso, Thursday, 29 October
Overcast. High 44°, low 35°.
0.14
Calypso, Friday, 30 October
Light snow. High 34°, low 28°.
0Calypso, Saturday, 31 October
Partly cloudy. High 40°, low 24°.
0Calypso, Sunday, 1 November
Overcast. High 43°, low 28°.
0Calypso, Monday, 2 November
Overcast. High 53°, low 34°.
0.02Calypso, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.02Calypso, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.02Calypso, Thursday, 5 November
Climate normal for this date — 60-year average.
0.02Calypso, Friday, 6 November
Climate normal for this date — 60-year average.
0.02Calypso, Saturday, 7 November
Climate normal for this date — 60-year average.
0.02Calypso, Sunday, 8 November
Climate normal for this date — 60-year average.
0.06Calypso, Monday, 9 November
Climate normal for this date — 60-year average.
0.05Calypso, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.01Calypso, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.02Calypso, Thursday, 12 November
Climate normal for this date — 60-year average.
0.02Calypso, Friday, 13 November
Climate normal for this date — 60-year average.
0.02Calypso, Saturday, 14 November
Climate normal for this date — 60-year average.
0.01Calypso, Sunday, 15 November
Climate normal for this date — 60-year average.
0.01Calypso, Monday, 16 November
Climate normal for this date — 60-year average.
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.
Sun and moon today
Weather history
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