As of 06:22 MDT

Weather in Dayton, MT

49°

Dayton, Saturday, 10 October, 06:22

Overcast. Feels like 49°. High 51°, low 31°.

Pressure29.59 inHg

Wind3 mph SW

Humidity71%

Visibility6.2 mi

Dew point39°

See detailed hourly forecast

Monthly outlook for Dayton, MT: average high 50.8°, average low 36.9°. That is 1.4° below the climate normal for October. Precipitation is expected on 7 days (about 1.8 inches), against a normal of 6 days and 1.7 inches. The warmest day looks like 18 October (64.5°), the coolest 11 October (27.5°).

50.8°/36.9°

Average high / low

−1.4°

Below normal

7 / 6

Wet days / normal

1.8 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
10 October – 19 October	52.1°	54.2°	-1.2°
20 October – 29 October	48.5°	50°	-0.9°
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, 1140° / 27°

0.13

40 °

Dayton, Sunday, 11 October

Light snow. High 40°, low 27°.

Pressure30.06 inHg

Wind10.7 mph NE

Humidity89%

Visibility2.6 mi

Dew point29°

Mon, 1244° / 30°

0.02

44 °

Dayton, Monday, 12 October

Light snow. High 44°, low 30°.

Pressure30.09 inHg

Wind2.8 mph E

Humidity74%

Visibility6.2 mi

Dew point29°

Tue, 1348° / 35°

48 °

Dayton, Tuesday, 13 October

Overcast. High 48°, low 35°.

Pressure30.15 inHg

Wind2.4 mph SE

Humidity69%

Visibility0.8 mi

Dew point35°

Wed, 1453° / 39°

53 °

Dayton, Wednesday, 14 October

Mostly clear. High 53°, low 39°.

Pressure30.18 inHg

Wind4 mph S

Humidity67%

Visibility—

Dew point37°

Thu, 1557° / 43°

57 °

Dayton, Thursday, 15 October

Mostly clear. High 57°, low 43°.

Pressure30.36 inHg

Wind7 mph NE

Humidity61%

Visibility—

Dew point38°

Fri, 1649° / 33°

49 °

Dayton, Friday, 16 October

Clear. High 49°, low 33°.

Pressure30.68 inHg

Wind7.7 mph NE

Humidity37%

Visibility—

Dew point17°

Sat, 1755° / 33°

55 °

Dayton, Saturday, 17 October

Mostly clear. High 55°, low 33°.

Pressure30.33 inHg

Wind3.2 mph S

Humidity32%

Visibility—

Dew point18°

Sun, 1865° / 39°

65 °

Dayton, Sunday, 18 October

Overcast. High 65°, low 39°.

Pressure29.97 inHg

Wind10.4 mph SW

Humidity34%

Visibility—

Dew point24°

Mon, 1959° / 42°

59 °

Dayton, Monday, 19 October

Overcast. High 59°, low 42°.

Pressure30.00 inHg

Wind4.9 mph SW

Humidity48%

Visibility—

Dew point31°

Tue, 2060° / 42°

60 °

Dayton, Tuesday, 20 October

Overcast. High 60°, low 42°.

Pressure29.80 inHg

Wind10 mph SW

Humidity44%

Visibility—

Dew point32°

Wed, 2147° / 41°

0.19

47 °

Dayton, Wednesday, 21 October

Light rain. High 47°, low 41°.

Pressure29.94 inHg

Wind8.1 mph S

Humidity83%

Visibility—

Dew point40°

Thu, 2243° / 39°

0.13

43 °

Dayton, Thursday, 22 October

Light rain. High 43°, low 39°.

Pressure30.09 inHg

Wind12.2 mph S

Humidity97%

Visibility—

Dew point38°

Fri, 2352° / 41°

0.53

52 °

Dayton, Friday, 23 October

Rain. High 52°, low 41°.

Pressure29.80 inHg

Wind24 mph W

Humidity57%

Visibility—

Dew point36°

Sat, 2445° / 37°

0.15

45 °

Dayton, Saturday, 24 October

Light rain. High 45°, low 37°.

Pressure30.15 inHg

Wind10.4 mph S

Humidity71%

Visibility—

Dew point33°

Sun, 2545° / 39°

0.45

45 °

Dayton, Sunday, 25 October

Rain. High 45°, low 39°.

Pressure29.50 inHg

Wind20.4 mph W

Humidity62%

Visibility—

Dew point31°

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.