As of 18:40 MDT

Weather in Calais, MT

39°Current weather

Calais, Monday, 12 October, 18:40

Overcast. Feels like 33°. High 40°, low 36°.

Pressure30.06 inHg
Wind7.1 mph NW
Humidity86%
Visibility6.2 mi
Dew point35°

Monthly outlook for Calais, MT: average high 57.4°, average low 41.6°. That is 1.4° above the climate normal for October. Precipitation is expected on 4 days (about 2.3 inches), against a normal of 3 days and 0.5 inches. The warmest day looks like 20 October (72.1°), the coolest 16 October (31°).

57.4°/41.6°
Average high / low
+1.4°
Above normal
4 / 3
Wet days / normal
2.3 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
12 October – 21 October60.1°56.1°+2.2°
22 October – 31 October53°51.1°+1°
1 November – 10 Novemberat normal44.3°—

October records over 66 years

90.3°1 October 1992All-time high
-4.4°31 October 2023All-time low

Climate normals and records are computed from the nearest reference point — Culbertson (14 mi).

Tue, 1350° / 36°0Overcast
50 °Overcast

Calais, Tuesday, 13 October

Overcast. High 50°, low 36°.

Pressure30.12 inHg
Wind6.8 mph W
Humidity61%
Visibility6.2 mi
Dew point32°
Wed, 1458° / 31°0Clear
58 °Clear

Calais, Wednesday, 14 October

Clear. High 58°, low 31°.

Pressure30.21 inHg
Wind5.4 mph S
Humidity57%
Visibility6.2 mi
Dew point37°
Thu, 1553° / 37°0Clear
53 °Clear

Calais, Thursday, 15 October

Clear. High 53°, low 37°.

Pressure30.56 inHg
Wind14.7 mph NW
Humidity50%
Visibility6.2 mi
Dew point28°
Fri, 1665° / 31°0Clear
65 °Clear

Calais, Friday, 16 October

Clear. High 65°, low 31°.

Pressure30.42 inHg
Wind9.2 mph S
Humidity40%
Visibility6.2 mi
Dew point28°
Sat, 1772° / 42°0Mostly clear
72 °Mostly clear

Calais, Saturday, 17 October

Mostly clear. High 72°, low 42°.

Pressure29.85 inHg
Wind13 mph SW
Humidity38%
Visibility—
Dew point35°
Sun, 1861° / 47°0Mostly clear
61 °Mostly clear

Calais, Sunday, 18 October

Mostly clear. High 61°, low 47°.

Pressure30.03 inHg
Wind11.5 mph NW
Humidity34%
Visibility—
Dew point28°
Mon, 1969° / 46°0Clear
69 °Clear

Calais, Monday, 19 October

Clear. High 69°, low 46°.

Pressure29.97 inHg
Wind18.3 mph S
Humidity23%
Visibility—
Dew point22°
Tue, 2072° / 50°0Overcast
72 °Overcast

Calais, Tuesday, 20 October

Overcast. High 72°, low 50°.

Pressure29.65 inHg
Wind13.5 mph SE
Humidity35%
Visibility—
Dew point35°
Wed, 2162° / 52°0Partly cloudy
62 °Partly cloudy

Calais, Wednesday, 21 October

Partly cloudy. High 62°, low 52°.

Pressure29.65 inHg
Wind12.8 mph N
Humidity49%
Visibility—
Dew point39°
Thu, 2248° / 45°0.41Rain
48 °Rain

Calais, Thursday, 22 October

Rain. High 48°, low 45°.

Pressure29.88 inHg
Wind16.3 mph N
Humidity77%
Visibility—
Dew point40°
Fri, 2350° / 40°1.27Heavy rain
50 °Heavy rain

Calais, Friday, 23 October

Heavy rain. High 50°, low 40°.

Pressure29.97 inHg
Wind14 mph N
Humidity58%
Visibility—
Dew point31°
Sat, 2455° / 39°0Clear
55 °Clear

Calais, Saturday, 24 October

Clear. High 55°, low 39°.

Pressure30.06 inHg
Wind4.1 mph SE
Humidity47%
Visibility—
Dew point29°
Sun, 2554° / 46°0.09Light rain
54 °Light rain

Calais, Sunday, 25 October

Light rain. High 54°, low 46°.

Pressure30.03 inHg
Wind7.6 mph W
Humidity61%
Visibility—
Dew point37°
Mon, 2658° / 45°0Overcast
58 °Overcast

Calais, Monday, 26 October

Overcast. High 58°, low 45°.

Pressure29.85 inHg
Wind10.5 mph SW
Humidity61%
Visibility—
Dew point39°
Tue, 2753° / 45°0Overcast
53 °Overcast

Calais, Tuesday, 27 October

Overcast. High 53°, low 45°.

Pressure29.91 inHg
Wind19.1 mph NW
Humidity44%
Visibility—
Dew point30°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 2850° / 33°0.03Climate normal
50 °Climate normal

Calais, Wednesday, 28 October

Climate normal for this date — 60-year average.

Average high50°
Average low33°
Average precipitation0.03 in
Chance of precipitation15%
Record high74° (1990)
Record low11° (2023)
Thu, 2948° / 32°0.05Climate normal
48 °Climate normal

Calais, Thursday, 29 October

Climate normal for this date — 60-year average.

Average high48°
Average low32°
Average precipitation0.05 in
Chance of precipitation22%
Record high72° (1968)
Record low10° (1991)
Fri, 3048° / 31°0.03Climate normal
48 °Climate normal

Calais, Friday, 30 October

Climate normal for this date — 60-year average.

Average high48°
Average low31°
Average precipitation0.03 in
Chance of precipitation15%
Record high70° (1983)
Record low-2° (1991)
Sat, 3148° / 31°0.02Climate normal
48 °Climate normal

Calais, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high48°
Average low31°
Average precipitation0.02 in
Chance of precipitation17%
Record high76° (1990)
Record low-4° (2023)
Sun, 0147° / 32°0.04Climate normal
47 °Climate normal

Calais, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high47°
Average low32°
Average precipitation0.04 in
Chance of precipitation15%
Record high69° (1965)
Record low2° (1984)
Mon, 0246° / 30°0.02Climate normal
46 °Climate normal

Calais, Monday, 2 November

Climate normal for this date — 60-year average.

Average high46°
Average low30°
Average precipitation0.02 in
Chance of precipitation13%
Record high71° (1965)
Record low3° (1991)
Tue, 0346° / 30°0.02Climate normal
46 °Climate normal

Calais, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high46°
Average low30°
Average precipitation0.02 in
Chance of precipitation15%
Record high66° (1981)
Record low-4° (1991)
Wed, 0447° / 30°0.03Climate normal
47 °Climate normal

Calais, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high47°
Average low30°
Average precipitation0.03 in
Chance of precipitation23%
Record high69° (1975)
Record low8° (1991)
Thu, 0546° / 29°0.02Climate normal
46 °Climate normal

Calais, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high46°
Average low29°
Average precipitation0.02 in
Chance of precipitation13%
Record high71° (2020)
Record low-1° (2003)
Fri, 0645° / 28°0.02Climate normal
45 °Climate normal

Calais, Friday, 6 November

Climate normal for this date — 60-year average.

Average high45°
Average low28°
Average precipitation0.02 in
Chance of precipitation17%
Record high66° (2009)
Record low0° (1991)
Sat, 0745° / 28°0.02Climate normal
45 °Climate normal

Calais, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high45°
Average low28°
Average precipitation0.02 in
Chance of precipitation10%
Record high73° (1999)
Record low-3° (1991)
Sun, 0843° / 27°0.03Climate normal
43 °Climate normal

Calais, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high43°
Average low27°
Average precipitation0.03 in
Chance of precipitation20%
Record high70° (1999)
Record low-2° (2000)
Mon, 0940° / 25°0.04Climate normal
40 °Climate normal

Calais, Monday, 9 November

Climate normal for this date — 60-year average.

Average high40°
Average low25°
Average precipitation0.04 in
Chance of precipitation18%
Record high66° (2016)
Record low3° (2000)
Tue, 1039° / 25°0.04Climate normal
39 °Climate normal

Calais, Tuesday, 10 November

Climate normal for this date — 60-year average.

Average high39°
Average low25°
Average precipitation0.04 in
Chance of precipitation18%
Record high64° (1999)
Record low-3° (1986)

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 Calais, 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 Calais, 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.