Monthly outlook for Delphia, MT: average high 55.9°, average low 38.8°. That is 2.2° below the climate normal for October. Precipitation is expected on 4 days (about 1.2 inches), against a normal of 3 days and 0.6 inches. The warmest day looks like 9 October (84.8°), the coolest 13 October (27°).
55.9°/38.8°
Average high / low
−2.2°
Below normal
4 / 3
Wet days / normal
1.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 October – 18 October
56.4°
60.2°
-2.1°
19 October – 28 October
55°
57.8°
-1.5°
29 October – 7 November
at normal
51.2°
—
October records over 66 years
91.4°1 October 2011All-time high
-14.8°30 October 1991All-time low
Climate normals and records are computed from the nearest reference point — Kilby Butte Colony (7 mi).
Sat, 1065° / 45°0.04
65 °
Delphia, Saturday, 10 October
Light rain. High 65°, low 45°.
Pressure29.65 inHg
Wind9.1 mph NE
Humidity48%
Visibility6.2 mi
Dew point39°
Sun, 1145° / 34°0.71
45 °
Delphia, Sunday, 11 October
Snow. High 45°, low 34°.
Pressure30.00 inHg
Wind12 mph NE
Humidity92%
Visibility2.8 mi
Dew point40°
Mon, 1236° / 31°0.35
36 °
Delphia, Monday, 12 October
Snow. High 36°, low 31°.
Pressure30.15 inHg
Wind9.7 mph N
Humidity92%
Visibility6.2 mi
Dew point32°
Tue, 1350° / 27°0
50 °
Delphia, Tuesday, 13 October
Clear. High 50°, low 27°.
Pressure30.12 inHg
Wind6.6 mph W
Humidity68%
Visibility6.2 mi
Dew point32°
Wed, 1459° / 31°0
59 °
Delphia, Wednesday, 14 October
Clear. High 59°, low 31°.
Pressure30.24 inHg
Wind6 mph W
Humidity48%
Visibility—
Dew point31°
Thu, 1554° / 39°0
54 °
Delphia, Thursday, 15 October
Partly cloudy. High 54°, low 39°.
Pressure30.30 inHg
Wind23.7 mph NW
Humidity51%
Visibility—
Dew point35°
Fri, 1644° / 34°0
44 °
Delphia, Friday, 16 October
Clear. High 44°, low 34°.
Pressure30.68 inHg
Wind18.6 mph NW
Humidity44%
Visibility—
Dew point19°
Sat, 1765° / 33°0
65 °
Delphia, Saturday, 17 October
Mostly clear. High 65°, low 33°.
Pressure30.00 inHg
Wind23.4 mph SW
Humidity27%
Visibility—
Dew point20°
Sun, 1862° / 46°0
62 °
Delphia, Sunday, 18 October
Clear. High 62°, low 46°.
Pressure29.97 inHg
Wind7.7 mph E
Humidity35%
Visibility—
Dew point29°
Mon, 1959° / 46°0.09
59 °
Delphia, Monday, 19 October
Light rain. High 59°, low 46°.
Pressure29.74 inHg
Wind11.2 mph N
Humidity42%
Visibility—
Dew point34°
Tue, 2053° / 43°0
53 °
Delphia, Tuesday, 20 October
Overcast. High 53°, low 43°.
Pressure29.71 inHg
Wind14.6 mph W
Humidity48%
Visibility—
Dew point32°
Wed, 2156° / 39°0
56 °
Delphia, Wednesday, 21 October
Clear. High 56°, low 39°.
Pressure30.06 inHg
Wind11.2 mph W
Humidity39%
Visibility—
Dew point25°
Thu, 2252° / 47°0.02
52 °
Delphia, Thursday, 22 October
Light rain. High 52°, low 47°.
Pressure29.85 inHg
Wind12.4 mph NW
Humidity53%
Visibility—
Dew point35°
Fri, 2353° / 40°0
53 °
Delphia, Friday, 23 October
Mostly clear. High 53°, low 40°.
Pressure30.24 inHg
Wind16.5 mph W
Humidity37%
Visibility—
Dew point23°
Sat, 2459° / 39°0
59 °
Delphia, Saturday, 24 October
Overcast. High 59°, low 39°.
Pressure30.12 inHg
Wind19.1 mph W
Humidity29%
Visibility—
Dew point18°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 2557° / 37°0.03
57 °
Delphia, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high57°
Average low37°
Average precipitation0.03 in
Chance of precipitation18%
Record high75° (2017)
Record low-1° (2020)
Mon, 2656° / 37°0.04
56 °
Delphia, Monday, 26 October
Climate normal for this date — 60-year average.
Average high56°
Average low37°
Average precipitation0.04 in
Chance of precipitation20%
Record high74° (1960)
Record low1° (2020)
Tue, 2755° / 35°0.02
55 °
Delphia, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high55°
Average low35°
Average precipitation0.02 in
Chance of precipitation18%
Record high73° (1983)
Record low1° (2023)
Wed, 2854° / 35°0.04
54 °
Delphia, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high54°
Average low35°
Average precipitation0.04 in
Chance of precipitation23%
Record high74° (1990)
Record low3° (2023)
Thu, 2952° / 34°0.03
52 °
Delphia, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high52°
Average low34°
Average precipitation0.03 in
Chance of precipitation22%
Record high74° (1968)
Record low-3° (1991)
Fri, 3053° / 32°0.02
53 °
Delphia, Friday, 30 October
Climate normal for this date — 60-year average.
Average high53°
Average low32°
Average precipitation0.02 in
Chance of precipitation15%
Record high72° (1990)
Record low-15° (1991)
Sat, 3152° / 34°0.06
52 °
Delphia, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high52°
Average low34°
Average precipitation0.06 in
Chance of precipitation20%
Record high74° (1990)
Record low8° (1984)
Sun, 0151° / 33°0.02
51 °
Delphia, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high51°
Average low33°
Average precipitation0.02 in
Chance of precipitation15%
Record high71° (1981)
Record low1° (1991)
Mon, 0251° / 32°0.02
51 °
Delphia, Monday, 2 November
Climate normal for this date — 60-year average.
Average high51°
Average low32°
Average precipitation0.02 in
Chance of precipitation10%
Record high70° (1965)
Record low-12° (1991)
Tue, 0351° / 33°0.03
51 °
Delphia, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high51°
Average low33°
Average precipitation0.03 in
Chance of precipitation13%
Record high70° (1981)
Record low-11° (1991)
Wed, 0452° / 34°0.03
52 °
Delphia, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high52°
Average low34°
Average precipitation0.03 in
Chance of precipitation17%
Record high72° (1976)
Record low6° (2003)
Thu, 0551° / 33°0.05
51 °
Delphia, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high51°
Average low33°
Average precipitation0.05 in
Chance of precipitation27%
Record high70° (2010)
Record low-2° (2003)
Fri, 0650° / 32°0.03
50 °
Delphia, Friday, 6 November
Climate normal for this date — 60-year average.
Average high50°
Average low32°
Average precipitation0.03 in
Chance of precipitation17%
Record high71° (2010)
Record low1° (2017)
Sat, 0749° / 32°0.02
49 °
Delphia, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high49°
Average low32°
Average precipitation0.02 in
Chance of precipitation18%
Record high72° (1999)
Record low2° (2017)
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 Delphia, 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 Delphia, 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.