Monthly outlook for De Smet, MT: average high 57.8°, average low 37.9°. That is 7° above the climate normal for October. Precipitation is expected on 2 days (about 0.5 inches), against a normal of 6 days and 1.2 inches. The warmest day looks like 21 October (64.6°), the coolest 24 October (29.8°).
57.8°/37.9°
Average high / low
+7°
Above normal
2 / 6
Wet days / normal
0.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
19 October – 28 October
57.5°
47.4°
+5.6°
29 October – 7 November
58.3°
41°
+9.6°
8 November – 17 November
at normal
36.8°
—
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).
Tue, 2064° / 37°0
64 °
De Smet, Tuesday, 20 October
Overcast. High 64°, low 37°.
Pressure30.09 inHg
Wind1.8 mph SW
Humidity52%
Visibility6.2 mi
Dew point36°
Wed, 2165° / 41°0
65 °
De Smet, Wednesday, 21 October
Overcast. High 65°, low 41°.
Pressure30.00 inHg
Wind2 mph S
Humidity54%
Visibility6.2 mi
Dew point39°
Thu, 2257° / 44°0.09
57 °
De Smet, Thursday, 22 October
Light rain. High 57°, low 44°.
Pressure29.85 inHg
Wind2.2 mph S
Humidity61%
Visibility5.2 mi
Dew point43°
Fri, 2346° / 43°0.44
46 °
De Smet, Friday, 23 October
Rain. High 46°, low 43°.
Pressure29.94 inHg
Wind11.1 mph W
Humidity85%
Visibility—
Dew point40°
Sat, 2449° / 30°0
49 °
De Smet, Saturday, 24 October
Clear. High 49°, low 30°.
Pressure30.30 inHg
Wind2.3 mph SE
Humidity65%
Visibility—
Dew point30°
Sun, 2564° / 36°0
64 °
De Smet, Sunday, 25 October
Clear. High 64°, low 36°.
Pressure30.24 inHg
Wind3.9 mph W
Humidity30%
Visibility—
Dew point21°
Mon, 2655° / 40°0
55 °
De Smet, Monday, 26 October
Overcast. High 55°, low 40°.
Pressure30.15 inHg
Wind6.2 mph N
Humidity38%
Visibility—
Dew point26°
Tue, 2754° / 32°0
54 °
De Smet, Tuesday, 27 October
Clear. High 54°, low 32°.
Pressure30.36 inHg
Wind4.7 mph SE
Humidity47%
Visibility—
Dew point26°
Wed, 2857° / 32°0
57 °
De Smet, Wednesday, 28 October
Clear. High 57°, low 32°.
Pressure30.21 inHg
Wind3.3 mph SE
Humidity39%
Visibility—
Dew point23°
Thu, 2961° / 39°0
61 °
De Smet, Thursday, 29 October
Overcast. High 61°, low 39°.
Pressure29.97 inHg
Wind2.1 mph N
Humidity35%
Visibility—
Dew point25°
Fri, 3060° / 38°0
60 °
De Smet, Friday, 30 October
Mostly clear. High 60°, low 38°.
Pressure29.80 inHg
Wind1.8 mph NW
Humidity40%
Visibility—
Dew point28°
Sat, 3160° / 39°0
60 °
De Smet, Saturday, 31 October
Clear. High 60°, low 39°.
Pressure29.94 inHg
Wind5.3 mph NW
Humidity43%
Visibility—
Dew point29°
Sun, 0160° / 38°0
60 °
De Smet, Sunday, 1 November
Clear. High 60°, low 38°.
Pressure30.03 inHg
Wind3.7 mph SE
Humidity47%
Visibility—
Dew point31°
Mon, 0253° / 42°0.01
53 °
De Smet, Monday, 2 November
Light rain. High 53°, low 42°.
Pressure30.03 inHg
Wind4.3 mph NW
Humidity63%
Visibility—
Dew point37°
Tue, 0356° / 40°0
56 °
De Smet, Tuesday, 3 November
Overcast. High 56°, low 40°.
Pressure30.12 inHg
Wind4 mph N
Humidity54%
Visibility—
Dew point35°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Sat, 1437° / 23°0.08
37 °
De Smet, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high37°
Average low23°
Average precipitation0.08 in
Chance of precipitation40%
Record high54° (1999)
Record low-2° (2000)
Sun, 1537° / 22°0.03
37 °
De Smet, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high37°
Average low22°
Average precipitation0.03 in
Chance of precipitation17%
Record high54° (2021)
Record low0° (2014)
Mon, 1636° / 23°0.08
36 °
De Smet, Monday, 16 November
Climate normal for this date — 60-year average.
Average high36°
Average low23°
Average precipitation0.08 in
Chance of precipitation45%
Record high52° (2025)
Record low-1° (1961)
Tue, 1735° / 22°0.07
35 °
De Smet, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high35°
Average low22°
Average precipitation0.07 in
Chance of precipitation48%
Record high52° (1976)
Record low-7° (1968)
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.