Monthly outlook for Dayton, MT: average high 52.3°, average low 39.1°. That is 0.5° below the climate normal for October. Precipitation is expected on 4 days (about 0.6 inches), against a normal of 6 days and 1.7 inches. The warmest day looks like 18 October (62.8°), the coolest 12 October (27.5°).
52.3°/39.1°
Average high / low
−0.5°
Below normal
4 / 6
Wet days / normal
0.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
10 October – 19 October
51.2°
54.2°
-1.7°
20 October – 29 October
54.1°
50°
+2.2°
30 October – 8 November
at normal
44.3°
—
October records over 66 years
80.8°1 October 1992All-time high
13.8°28 October 1971All-time low
Climate normals and records are computed from the nearest reference point — Woods Bay (14 mi).
Sun, 1137° / 30°0.14
37 °
Dayton, Sunday, 11 October
Snow. High 37°, low 30°.
Pressure30.06 inHg
Wind10.3 mph NE
Humidity90%
Visibility2.4 mi
Dew point28°
Mon, 1243° / 27°0.02
43 °
Dayton, Monday, 12 October
Light snow. High 43°, low 27°.
Pressure30.12 inHg
Wind1.4 mph NE
Humidity80%
Visibility6.2 mi
Dew point29°
Tue, 1347° / 34°0
47 °
Dayton, Tuesday, 13 October
Overcast. High 47°, low 34°.
Pressure30.15 inHg
Wind1.9 mph SE
Humidity70%
Visibility—
Dew point34°
Wed, 1452° / 38°0
52 °
Dayton, Wednesday, 14 October
Partly cloudy. High 52°, low 38°.
Pressure30.21 inHg
Wind2.4 mph S
Humidity72%
Visibility6.2 mi
Dew point38°
Thu, 1557° / 42°0
57 °
Dayton, Thursday, 15 October
Clear. High 57°, low 42°.
Pressure30.45 inHg
Wind2.5 mph SE
Humidity59%
Visibility—
Dew point37°
Fri, 1653° / 38°0
53 °
Dayton, Friday, 16 October
Partly cloudy. High 53°, low 38°.
Pressure30.62 inHg
Wind5 mph N
Humidity48%
Visibility—
Dew point27°
Sat, 1758° / 39°0
58 °
Dayton, Saturday, 17 October
Overcast. High 58°, low 39°.
Pressure30.09 inHg
Wind6 mph S
Humidity51%
Visibility—
Dew point31°
Sun, 1863° / 45°0
63 °
Dayton, Sunday, 18 October
Overcast. High 63°, low 45°.
Pressure29.97 inHg
Wind9.8 mph SW
Humidity46%
Visibility—
Dew point35°
Mon, 1954° / 41°0.05
54 °
Dayton, Monday, 19 October
Light rain. High 54°, low 41°.
Pressure29.97 inHg
Wind5.6 mph SW
Humidity55%
Visibility—
Dew point35°
Tue, 2050° / 42°0.17
50 °
Dayton, Tuesday, 20 October
Rain. High 50°, low 42°.
Pressure30.21 inHg
Wind7.3 mph S
Humidity72%
Visibility—
Dew point38°
Wed, 2155° / 41°0.01
55 °
Dayton, Wednesday, 21 October
Light rain. High 55°, low 41°.
Pressure30.03 inHg
Wind12 mph W
Humidity51%
Visibility—
Dew point32°
Thu, 2251° / 38°0
51 °
Dayton, Thursday, 22 October
Overcast. High 51°, low 38°.
Pressure30.09 inHg
Wind5.7 mph SW
Humidity45%
Visibility—
Dew point25°
Fri, 2353° / 43°0
53 °
Dayton, Friday, 23 October
Overcast. High 53°, low 43°.
Pressure29.88 inHg
Wind7.5 mph S
Humidity44%
Visibility—
Dew point28°
Sat, 2459° / 47°0
59 °
Dayton, Saturday, 24 October
Overcast. High 59°, low 47°.
Pressure30.18 inHg
Wind6.3 mph SW
Humidity63%
Visibility—
Dew point41°
Sun, 2557° / 44°0
57 °
Dayton, Sunday, 25 October
Overcast. High 57°, low 44°.
Pressure30.36 inHg
Wind2.4 mph SE
Humidity64%
Visibility—
Dew point41°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2649° / 39°0.13
49 °
Dayton, Monday, 26 October
Climate normal for this date — 60-year average.
Average high49°
Average low39°
Average precipitation0.13 in
Chance of precipitation52%
Record high64° (1986)
Record low20° (2020)
Tue, 2748° / 38°0.13
48 °
Dayton, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high48°
Average low38°
Average precipitation0.13 in
Chance of precipitation48%
Record high60° (1983)
Record low21° (1971)
Wed, 2847° / 38°0.12
47 °
Dayton, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high47°
Average low38°
Average precipitation0.12 in
Chance of precipitation52%
Record high60° (1974)
Record low14° (1971)
Thu, 2946° / 37°0.14
46 °
Dayton, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high46°
Average low37°
Average precipitation0.14 in
Chance of precipitation50%
Record high60° (1987)
Record low14° (1991)
Fri, 3046° / 36°0.1
46 °
Dayton, Friday, 30 October
Climate normal for this date — 60-year average.
Average high46°
Average low36°
Average precipitation0.1 in
Chance of precipitation40%
Record high62° (2008)
Record low15° (2002)
Sat, 3145° / 37°0.13
45 °
Dayton, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high45°
Average low37°
Average precipitation0.13 in
Chance of precipitation52%
Record high60° (2008)
Record low14° (2003)
Sun, 0145° / 36°0.12
45 °
Dayton, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high45°
Average low36°
Average precipitation0.12 in
Chance of precipitation47%
Record high61° (1988)
Record low13° (1991)
Mon, 0245° / 36°0.14
45 °
Dayton, Monday, 2 November
Climate normal for this date — 60-year average.
Average high45°
Average low36°
Average precipitation0.14 in
Chance of precipitation47%
Record high59° (1981)
Record low11° (1991)
Tue, 0345° / 37°0.11
45 °
Dayton, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high45°
Average low37°
Average precipitation0.11 in
Chance of precipitation47%
Record high58° (2020)
Record low20° (1973)
Wed, 0445° / 37°0.15
45 °
Dayton, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high45°
Average low37°
Average precipitation0.15 in
Chance of precipitation55%
Record high57° (2020)
Record low17° (1973)
Thu, 0544° / 36°0.13
44 °
Dayton, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high44°
Average low36°
Average precipitation0.13 in
Chance of precipitation60%
Record high58° (2020)
Record low19° (1973)
Fri, 0643° / 35°0.15
43 °
Dayton, Friday, 6 November
Climate normal for this date — 60-year average.
Average high43°
Average low35°
Average precipitation0.15 in
Chance of precipitation63%
Record high59° (2010)
Record low15° (1973)
Sat, 0743° / 35°0.16
43 °
Dayton, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high43°
Average low35°
Average precipitation0.16 in
Chance of precipitation58%
Record high56° (1978)
Record low18° (2022)
Sun, 0843° / 34°0.12
43 °
Dayton, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high43°
Average low34°
Average precipitation0.12 in
Chance of precipitation58%
Record high55° (2016)
Record low16° (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 Dayton, 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 Dayton, 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.