Monthly outlook for Archer, MT: average high 54.4°, average low 38°. That is 0.4° above the climate normal for October. Precipitation is expected on 0 days (about 0.1 inches), against a normal of 3 days and 0.5 inches. The warmest day looks like 9 October (77.6°), the coolest 17 October (30.2°).
54.4°/38°
Average high / low
+0.4°
Above normal
0 / 3
Wet days / normal
0.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 October – 17 October
54.7°
54.5°
+0.1°
18 October – 27 October
53.9°
51.1°
+1.6°
28 October – 6 November
at normal
43.8°
—
October records over 66 years
85.5°1 October 1992All-time high
-5.6°30 October 1984All-time low
Climate normals and records are computed from the nearest reference point — Outlook (7 mi).
Fri, 0978° / 40°0
78 °
Archer, Friday, 9 October
Overcast. High 78°, low 40°.
Pressure29.50 inHg
Wind10.4 mph S
Humidity37%
Visibility6.2 mi
Dew point41°
Sat, 1058° / 42°0.04
58 °
Archer, Saturday, 10 October
Light rain. High 58°, low 42°.
Pressure29.65 inHg
Wind14.2 mph NW
Humidity62%
Visibility6.0 mi
Dew point38°
Sun, 1142° / 39°0.02
42 °
Archer, Sunday, 11 October
Light rain. High 42°, low 39°.
Pressure30.12 inHg
Wind11.6 mph N
Humidity71%
Visibility6.2 mi
Dew point32°
Mon, 1242° / 36°0.01
42 °
Archer, Monday, 12 October
Light rain. High 42°, low 36°.
Pressure30.21 inHg
Wind7.8 mph N
Humidity66%
Visibility—
Dew point30°
Tue, 1361° / 32°0
61 °
Archer, Tuesday, 13 October
Clear. High 61°, low 32°.
Pressure30.09 inHg
Wind13.1 mph SW
Humidity48%
Visibility—
Dew point30°
Wed, 1463° / 47°0
63 °
Archer, Wednesday, 14 October
Overcast. High 63°, low 47°.
Pressure29.50 inHg
Wind17.6 mph NW
Humidity34%
Visibility—
Dew point31°
Thu, 1543° / 37°0
43 °
Archer, Thursday, 15 October
Light rain. High 43°, low 37°.
Pressure30.12 inHg
Wind21.5 mph NW
Humidity60%
Visibility—
Dew point26°
Fri, 1642° / 35°0
42 °
Archer, Friday, 16 October
Overcast. High 42°, low 35°.
Pressure30.47 inHg
Wind17.8 mph NW
Humidity56%
Visibility—
Dew point23°
Sat, 1752° / 30°0
52 °
Archer, Saturday, 17 October
Clear. High 52°, low 30°.
Pressure30.15 inHg
Wind10.8 mph S
Humidity38%
Visibility—
Dew point19°
Sun, 1859° / 39°0
59 °
Archer, Sunday, 18 October
Mostly clear. High 59°, low 39°.
Pressure29.97 inHg
Wind7.7 mph SW
Humidity31%
Visibility—
Dew point21°
Mon, 1949° / 39°0
49 °
Archer, Monday, 19 October
Clear. High 49°, low 39°.
Pressure30.30 inHg
Wind16.6 mph NW
Humidity48%
Visibility—
Dew point28°
Tue, 2058° / 34°0
58 °
Archer, Tuesday, 20 October
Clear. High 58°, low 34°.
Pressure30.15 inHg
Wind17.9 mph S
Humidity40%
Visibility—
Dew point24°
Wed, 2166° / 45°0
66 °
Archer, Wednesday, 21 October
Overcast. High 66°, low 45°.
Pressure29.38 inHg
Wind27.6 mph W
Humidity28%
Visibility—
Dew point30°
Thu, 2247° / 39°0.01
47 °
Archer, Thursday, 22 October
Light rain. High 47°, low 39°.
Pressure29.56 inHg
Wind22.3 mph NW
Humidity73%
Visibility—
Dew point34°
Fri, 2344° / 36°0
44 °
Archer, Friday, 23 October
Overcast. High 44°, low 36°.
Pressure29.91 inHg
Wind19.2 mph NW
Humidity48%
Visibility—
Dew point24°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 2449° / 32°0.02
49 °
Archer, Saturday, 24 October
Climate normal for this date — 60-year average.
Average high49°
Average low32°
Average precipitation0.02 in
Chance of precipitation18%
Record high72° (1992)
Record low7° (2020)
Sun, 2550° / 33°0.04
50 °
Archer, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high50°
Average low33°
Average precipitation0.04 in
Chance of precipitation12%
Record high70° (1990)
Record low6° (2020)
Mon, 2649° / 32°0.03
49 °
Archer, Monday, 26 October
Climate normal for this date — 60-year average.
Average high49°
Average low32°
Average precipitation0.03 in
Chance of precipitation20%
Record high71° (1966)
Record low3° (2020)
Tue, 2748° / 31°0.05
48 °
Archer, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high48°
Average low31°
Average precipitation0.05 in
Chance of precipitation20%
Record high71° (1983)
Record low13° (1984)
Wed, 2846° / 30°0.02
46 °
Archer, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high46°
Average low30°
Average precipitation0.02 in
Chance of precipitation13%
Record high69° (1990)
Record low0° (1984)
Thu, 2945° / 29°0.05
45 °
Archer, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high45°
Average low29°
Average precipitation0.05 in
Chance of precipitation17%
Record high69° (2021)
Record low8° (1991)
Fri, 3045° / 28°0.02
45 °
Archer, Friday, 30 October
Climate normal for this date — 60-year average.
Average high45°
Average low28°
Average precipitation0.02 in
Chance of precipitation13%
Record high65° (1968)
Record low-6° (1984)
Sat, 3145° / 28°0.03
45 °
Archer, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high45°
Average low28°
Average precipitation0.03 in
Chance of precipitation20%
Record high69° (1990)
Record low3° (1984)
Sun, 0144° / 29°0.03
44 °
Archer, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high44°
Average low29°
Average precipitation0.03 in
Chance of precipitation12%
Record high66° (2008)
Record low-7° (1984)
Mon, 0243° / 28°0.02
43 °
Archer, Monday, 2 November
Climate normal for this date — 60-year average.
Average high43°
Average low28°
Average precipitation0.02 in
Chance of precipitation15%
Record high69° (1965)
Record low-2° (1984)
Tue, 0343° / 28°0.02
43 °
Archer, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high43°
Average low28°
Average precipitation0.02 in
Chance of precipitation13%
Record high65° (2020)
Record low-4° (1991)
Wed, 0444° / 28°0.03
44 °
Archer, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high44°
Average low28°
Average precipitation0.03 in
Chance of precipitation22%
Record high66° (1975)
Record low7° (1973)
Thu, 0543° / 26°0.03
43 °
Archer, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high43°
Average low26°
Average precipitation0.03 in
Chance of precipitation15%
Record high69° (2020)
Record low-4° (2003)
Fri, 0641° / 25°0.02
41 °
Archer, Friday, 6 November
Climate normal for this date — 60-year average.
Average high41°
Average low25°
Average precipitation0.02 in
Chance of precipitation15%
Record high64° (2009)
Record low-7° (1991)
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 Archer, 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 Archer, 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.