Monthly outlook for De Smet, MT: average high 58°, average low 39°. That is 5.8° above the climate normal for October. Precipitation is expected on 2 days (about 0.2 inches), against a normal of 5 days and 1.1 inches. The warmest day looks like 17 October (67.7°), the coolest 24 October (28.9°).
58°/39°
Average high / low
+5.8°
Above normal
2 / 5
Wet days / normal
0.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
15 October – 24 October
58.6°
49.7°
+5°
25 October – 3 November
57°
43°
+7.8°
4 November – 13 November
at normal
38.3°
—
October records over 66 years
78.4°1 October 1992All-time high
-12.5°29 October 2019All-time low
Climate normals and records are computed from the nearest reference point — Evaro (10 mi).
Fri, 1662° / 37°0
62 °
De Smet, Friday, 16 October
Overcast. High 62°, low 37°.
Pressure30.47 inHg
Wind1.5 mph SE
Humidity48%
Visibility6.2 mi
Dew point31°
Sat, 1768° / 40°0
68 °
De Smet, Saturday, 17 October
Overcast. High 68°, low 40°.
Pressure30.09 inHg
Wind3.6 mph SE
Humidity38%
Visibility6.2 mi
Dew point31°
Sun, 1860° / 36°0
60 °
De Smet, Sunday, 18 October
Clear. High 60°, low 36°.
Pressure30.09 inHg
Wind1.2 mph S
Humidity64%
Visibility6.2 mi
Dew point40°
Mon, 1965° / 43°0
65 °
De Smet, Monday, 19 October
Overcast. High 65°, low 43°.
Pressure29.88 inHg
Wind3.6 mph SE
Humidity49%
Visibility—
Dew point37°
Tue, 2064° / 41°0
64 °
De Smet, Tuesday, 20 October
Overcast. High 64°, low 41°.
Pressure29.94 inHg
Wind3.5 mph N
Humidity55%
Visibility—
Dew point38°
Wed, 2163° / 44°0.12
63 °
De Smet, Wednesday, 21 October
Light rain. High 63°, low 44°.
Pressure29.80 inHg
Wind4.8 mph SW
Humidity47%
Visibility—
Dew point37°
Thu, 2254° / 46°0
54 °
De Smet, Thursday, 22 October
Overcast. High 54°, low 46°.
Pressure29.83 inHg
Wind9.8 mph W
Humidity68%
Visibility—
Dew point42°
Fri, 2344° / 37°0.08
44 °
De Smet, Friday, 23 October
Snow. High 44°, low 37°.
Pressure30.24 inHg
Wind8.1 mph W
Humidity62%
Visibility—
Dew point31°
Sat, 2451° / 29°0
51 °
De Smet, Saturday, 24 October
Overcast. High 51°, low 29°.
Pressure30.62 inHg
Wind6.4 mph W
Humidity51%
Visibility—
Dew point26°
Sun, 2546° / 34°0.01
46 °
De Smet, Sunday, 25 October
Light rain. High 46°, low 34°.
Pressure30.39 inHg
Wind5.2 mph W
Humidity45%
Visibility—
Dew point25°
Mon, 2651° / 39°0
51 °
De Smet, Monday, 26 October
Overcast. High 51°, low 39°.
Pressure30.47 inHg
Wind4.5 mph NW
Humidity63%
Visibility—
Dew point34°
Tue, 2755° / 38°0
55 °
De Smet, Tuesday, 27 October
Overcast. High 55°, low 38°.
Pressure30.30 inHg
Wind2.3 mph N
Humidity61%
Visibility—
Dew point35°
Wed, 2860° / 42°0
60 °
De Smet, Wednesday, 28 October
Overcast. High 60°, low 42°.
Pressure30.00 inHg
Wind3.1 mph NW
Humidity58%
Visibility—
Dew point39°
Thu, 2965° / 42°0
65 °
De Smet, Thursday, 29 October
Mostly clear. High 65°, low 42°.
Pressure30.18 inHg
Wind2.9 mph NE
Humidity49%
Visibility—
Dew point37°
Fri, 3065° / 43°0
65 °
De Smet, Friday, 30 October
Overcast. High 65°, low 43°.
Pressure30.09 inHg
Wind5.3 mph SE
Humidity44%
Visibility—
Dew point34°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 3141° / 27°0.09
41 °
De Smet, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high41°
Average low27°
Average precipitation0.09 in
Chance of precipitation43%
Record high60° (2014)
Record low0° (1996)
Sun, 0142° / 26°0.09
42 °
De Smet, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high42°
Average low26°
Average precipitation0.09 in
Chance of precipitation38%
Record high58° (1988)
Record low-2° (1984)
Mon, 0241° / 27°0.1
41 °
De Smet, Monday, 2 November
Climate normal for this date — 60-year average.
Average high41°
Average low27°
Average precipitation0.1 in
Chance of precipitation33%
Record high58° (1981)
Record low-1° (1991)
Tue, 0341° / 27°0.05
41 °
De Smet, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high41°
Average low27°
Average precipitation0.05 in
Chance of precipitation32%
Record high58° (1981)
Record low-7° (1973)
Wed, 0441° / 28°0.1
41 °
De Smet, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high41°
Average low28°
Average precipitation0.1 in
Chance of precipitation52%
Record high56° (1980)
Record low-7° (1973)
Thu, 0540° / 27°0.09
40 °
De Smet, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high40°
Average low27°
Average precipitation0.09 in
Chance of precipitation45%
Record high58° (1980)
Record low-8° (2003)
Fri, 0640° / 25°0.1
40 °
De Smet, Friday, 6 November
Climate normal for this date — 60-year average.
Average high40°
Average low25°
Average precipitation0.1 in
Chance of precipitation47%
Record high58° (2012)
Record low-1° (2003)
Sat, 0739° / 25°0.11
39 °
De Smet, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high39°
Average low25°
Average precipitation0.11 in
Chance of precipitation50%
Record high53° (1978)
Record low2° (2003)
Sun, 0838° / 24°0.07
38 °
De Smet, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high38°
Average low24°
Average precipitation0.07 in
Chance of precipitation43%
Record high56° (2016)
Record low-1° (1994)
Mon, 0938° / 24°0.07
38 °
De Smet, Monday, 9 November
Climate normal for this date — 60-year average.
Average high38°
Average low24°
Average precipitation0.07 in
Chance of precipitation42%
Record high58° (2016)
Record low1° (2020)
Tue, 1037° / 23°0.06
37 °
De Smet, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high37°
Average low23°
Average precipitation0.06 in
Chance of precipitation40%
Record high55° (2016)
Record low-19° (1986)
Wed, 1137° / 21°0.07
37 °
De Smet, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high37°
Average low21°
Average precipitation0.07 in
Chance of precipitation35%
Record high56° (2016)
Record low-7° (2000)
Thu, 1237° / 23°0.08
37 °
De Smet, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high37°
Average low23°
Average precipitation0.08 in
Chance of precipitation43%
Record high58° (1999)
Record low-9° (1986)
Fri, 1337° / 24°0.09
37 °
De Smet, Friday, 13 November
Climate normal for this date — 60-year average.
Average high37°
Average low24°
Average precipitation0.09 in
Chance of precipitation45%
Record high55° (2025)
Record low1° (2000)
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 De Smet, 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 De Smet, 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.