Monthly outlook for Opheim, MT: average high 49.8°, average low 35.6°. That is 0.8° below the climate normal for October. Precipitation is expected on 4 days (about 0.8 inches), against a normal of 3 days and 0.5 inches. The warmest day looks like 9 October (76.1°), the coolest 17 October (27°).
49.8°/35.6°
Average high / low
−0.8°
Below normal
4 / 3
Wet days / normal
0.8 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 October – 18 October
50°
52.1°
-1.2°
19 October – 28 October
49.5°
48.4°
+0.6°
29 October – 7 November
at normal
41.6°
—
October records over 66 years
82.2°1 October 1992All-time high
-8.9°30 October 1984All-time low
Sat, 1053° / 41°0.07
53 °
Opheim, Saturday, 10 October
Light rain. High 53°, low 41°.
Pressure29.68 inHg
Wind12 mph NW
Humidity62%
Visibility6.2 mi
Dew point40°
Sun, 1142° / 33°0.3
42 °
Opheim, Sunday, 11 October
Snow. High 42°, low 33°.
Pressure30.15 inHg
Wind14.5 mph NE
Humidity83%
Visibility6.2 mi
Dew point32°
Mon, 1234° / 32°0.35
34 °
Opheim, Monday, 12 October
Snow. High 34°, low 32°.
Pressure30.15 inHg
Wind8.2 mph NE
Humidity96%
Visibility2.5 mi
Dew point31°
Tue, 1344° / 31°0
44 °
Opheim, Tuesday, 13 October
Clear. High 44°, low 31°.
Pressure30.12 inHg
Wind6.8 mph SW
Humidity77%
Visibility6.2 mi
Dew point32°
Wed, 1454° / 33°0
54 °
Opheim, Wednesday, 14 October
Clear. High 54°, low 33°.
Pressure30.27 inHg
Wind11.1 mph S
Humidity51%
Visibility—
Dew point30°
Thu, 1551° / 34°0.05
51 °
Opheim, Thursday, 15 October
Snow. High 51°, low 34°.
Pressure30.24 inHg
Wind30.9 mph NW
Humidity65%
Visibility—
Dew point38°
Fri, 1635° / 28°0.02
35 °
Opheim, Friday, 16 October
Light snow. High 35°, low 28°.
Pressure30.68 inHg
Wind26.3 mph NW
Humidity63%
Visibility—
Dew point19°
Sat, 1755° / 27°0
55 °
Opheim, Saturday, 17 October
Overcast. High 55°, low 27°.
Pressure30.00 inHg
Wind22.2 mph S
Humidity35%
Visibility—
Dew point16°
Sun, 1855° / 39°0
55 °
Opheim, Sunday, 18 October
Mostly clear. High 55°, low 39°.
Pressure30.03 inHg
Wind9.2 mph SE
Humidity28%
Visibility—
Dew point19°
Mon, 1954° / 40°0
54 °
Opheim, Monday, 19 October
Overcast. High 54°, low 40°.
Pressure29.80 inHg
Wind18.5 mph SE
Humidity43%
Visibility—
Dew point26°
Tue, 2051° / 39°0
51 °
Opheim, Tuesday, 20 October
Partly cloudy. High 51°, low 39°.
Pressure29.71 inHg
Wind14.7 mph W
Humidity48%
Visibility—
Dew point29°
Wed, 2149° / 39°0
49 °
Opheim, Wednesday, 21 October
Overcast. High 49°, low 39°.
Pressure30.03 inHg
Wind9.3 mph NW
Humidity47%
Visibility—
Dew point26°
Thu, 2252° / 40°0
52 °
Opheim, Thursday, 22 October
Overcast. High 52°, low 40°.
Pressure29.77 inHg
Wind19.5 mph W
Humidity38%
Visibility—
Dew point24°
Fri, 2343° / 35°0
43 °
Opheim, Friday, 23 October
Overcast. High 43°, low 35°.
Pressure30.18 inHg
Wind18.5 mph NW
Humidity54%
Visibility—
Dew point26°
Sat, 2447° / 36°0
47 °
Opheim, Saturday, 24 October
Overcast. High 47°, low 36°.
Pressure30.06 inHg
Wind23.9 mph NW
Humidity41%
Visibility—
Dew point22°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 2548° / 32°0.02
48 °
Opheim, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high48°
Average low32°
Average precipitation0.02 in
Chance of precipitation12%
Record high67° (1968)
Record low1° (2020)
Mon, 2647° / 31°0.03
47 °
Opheim, Monday, 26 October
Climate normal for this date — 60-year average.
Average high47°
Average low31°
Average precipitation0.03 in
Chance of precipitation23%
Record high69° (1966)
Record low2° (2020)
Tue, 2745° / 29°0.03
45 °
Opheim, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high45°
Average low29°
Average precipitation0.03 in
Chance of precipitation18%
Record high67° (1983)
Record low11° (1984)
Wed, 2844° / 29°0.02
44 °
Opheim, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high44°
Average low29°
Average precipitation0.02 in
Chance of precipitation15%
Record high65° (1990)
Record low-2° (1984)
Thu, 2944° / 28°0.04
44 °
Opheim, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high44°
Average low28°
Average precipitation0.04 in
Chance of precipitation13%
Record high66° (1968)
Record low2° (1991)
Fri, 3043° / 27°0.02
43 °
Opheim, Friday, 30 October
Climate normal for this date — 60-year average.
Average high43°
Average low27°
Average precipitation0.02 in
Chance of precipitation15%
Record high63° (1983)
Record low-9° (1984)
Sat, 3143° / 27°0.03
43 °
Opheim, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high43°
Average low27°
Average precipitation0.03 in
Chance of precipitation13%
Record high64° (1987)
Record low-3° (1984)
Sun, 0142° / 28°0.01
42 °
Opheim, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high42°
Average low28°
Average precipitation0.01 in
Chance of precipitation12%
Record high62° (1965)
Record low-13° (1984)
Mon, 0241° / 27°0.02
41 °
Opheim, Monday, 2 November
Climate normal for this date — 60-year average.
Average high41°
Average low27°
Average precipitation0.02 in
Chance of precipitation15%
Record high66° (1965)
Record low-5° (1991)
Tue, 0341° / 28°0.02
41 °
Opheim, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high41°
Average low28°
Average precipitation0.02 in
Chance of precipitation17%
Record high62° (2020)
Record low-10° (1991)
Wed, 0442° / 27°0.03
42 °
Opheim, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high42°
Average low27°
Average precipitation0.03 in
Chance of precipitation22%
Record high63° (1983)
Record low4° (1973)
Thu, 0541° / 26°0.02
41 °
Opheim, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high41°
Average low26°
Average precipitation0.02 in
Chance of precipitation15%
Record high65° (2020)
Record low-14° (2003)
Fri, 0640° / 24°0.02
40 °
Opheim, Friday, 6 November
Climate normal for this date — 60-year average.
Average high40°
Average low24°
Average precipitation0.02 in
Chance of precipitation15%
Record high63° (2010)
Record low-4° (1991)
Sat, 0739° / 25°0.02
39 °
Opheim, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high39°
Average low25°
Average precipitation0.02 in
Chance of precipitation13%
Record high63° (1999)
Record low-2° (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 Opheim, 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 Opheim, 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.