Monthly outlook for McElroy, MT: average high 52.1°, average low 37.2°. That is 0.5° below the climate normal for October. Precipitation is expected on 5 days (about 0.9 inches), against a normal of 3 days and 0.5 inches. The warmest day looks like 9 October (75.3°), the coolest 17 October (26.2°).
52.1°/37.2°
Average high / low
−0.5°
Below normal
5 / 3
Wet days / normal
0.9 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 October – 18 October
51.2°
53.9°
-1.5°
19 October – 28 October
53.6°
50.3°
+1.8°
29 October – 7 November
at normal
43.1°
—
October records over 66 years
85.8°1 October 1992All-time high
-2.9°30 October 1984All-time low
Sat, 1060° / 44°0.15
60 °
McElroy, Saturday, 10 October
Rain. High 60°, low 44°.
Pressure29.62 inHg
Wind14.8 mph NW
Humidity57%
Visibility6.2 mi
Dew point42°
Sun, 1143° / 38°0.23
43 °
McElroy, Sunday, 11 October
Light rain. High 43°, low 38°.
Pressure30.12 inHg
Wind13.2 mph NE
Humidity91%
Visibility4.4 mi
Dew point37°
Mon, 1237° / 34°0.38
37 °
McElroy, Monday, 12 October
Snow. High 37°, low 34°.
Pressure30.12 inHg
Wind9.3 mph NE
Humidity100%
Visibility0.9 mi
Dew point35°
Tue, 1348° / 35°0
48 °
McElroy, Tuesday, 13 October
Overcast. High 48°, low 35°.
Pressure30.12 inHg
Wind10 mph SW
Humidity69%
Visibility6.2 mi
Dew point33°
Wed, 1455° / 33°0
55 °
McElroy, Wednesday, 14 October
Clear. High 55°, low 33°.
Pressure30.30 inHg
Wind5.9 mph S
Humidity56%
Visibility—
Dew point33°
Thu, 1557° / 35°0.07
57 °
McElroy, Thursday, 15 October
Light snow. High 57°, low 35°.
Pressure30.18 inHg
Wind30.2 mph NW
Humidity53%
Visibility—
Dew point38°
Fri, 1634° / 29°0.08
34 °
McElroy, Friday, 16 October
Light snow. High 34°, low 29°.
Pressure30.59 inHg
Wind32.4 mph N
Humidity69%
Visibility—
Dew point23°
Sat, 1748° / 26°0
48 °
McElroy, Saturday, 17 October
Overcast. High 48°, low 26°.
Pressure30.15 inHg
Wind20.8 mph S
Humidity37%
Visibility—
Dew point15°
Sun, 1855° / 39°0
55 °
McElroy, Sunday, 18 October
Partly cloudy. High 55°, low 39°.
Pressure30.03 inHg
Wind10.9 mph NW
Humidity36%
Visibility—
Dew point24°
Mon, 1954° / 38°0
54 °
McElroy, Monday, 19 October
Overcast. High 54°, low 38°.
Pressure29.91 inHg
Wind19.6 mph SE
Humidity46%
Visibility—
Dew point29°
Tue, 2057° / 44°0
57 °
McElroy, Tuesday, 20 October
Mostly clear. High 57°, low 44°.
Pressure29.68 inHg
Wind10.9 mph SW
Humidity46%
Visibility—
Dew point34°
Wed, 2152° / 43°0
52 °
McElroy, Wednesday, 21 October
Light rain. High 52°, low 43°.
Pressure30.00 inHg
Wind9.3 mph NW
Humidity61%
Visibility—
Dew point36°
Thu, 2258° / 42°0
58 °
McElroy, Thursday, 22 October
Overcast. High 58°, low 42°.
Pressure29.77 inHg
Wind14.3 mph SW
Humidity37%
Visibility—
Dew point27°
Fri, 2348° / 39°0
48 °
McElroy, Friday, 23 October
Overcast. High 48°, low 39°.
Pressure30.12 inHg
Wind19.2 mph NW
Humidity56%
Visibility—
Dew point27°
Sat, 2452° / 35°0
52 °
McElroy, Saturday, 24 October
Overcast. High 52°, low 35°.
Pressure30.06 inHg
Wind16.6 mph NW
Humidity41%
Visibility—
Dew point24°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 2550° / 33°0.04
50 °
McElroy, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high50°
Average low33°
Average precipitation0.04 in
Chance of precipitation12%
Record high68° (1990)
Record low12° (1980)
Mon, 2649° / 33°0.03
49 °
McElroy, Monday, 26 October
Climate normal for this date — 60-year average.
Average high49°
Average low33°
Average precipitation0.03 in
Chance of precipitation18%
Record high71° (1966)
Record low6° (2020)
Tue, 2748° / 31°0.05
48 °
McElroy, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high48°
Average low31°
Average precipitation0.05 in
Chance of precipitation23%
Record high71° (1983)
Record low15° (1984)
Wed, 2846° / 31°0.03
46 °
McElroy, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high46°
Average low31°
Average precipitation0.03 in
Chance of precipitation13%
Record high67° (1990)
Record low3° (1984)
Thu, 2945° / 30°0.04
45 °
McElroy, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high45°
Average low30°
Average precipitation0.04 in
Chance of precipitation22%
Record high67° (2021)
Record low9° (1991)
Fri, 3045° / 29°0.03
45 °
McElroy, Friday, 30 October
Climate normal for this date — 60-year average.
Average high45°
Average low29°
Average precipitation0.03 in
Chance of precipitation13%
Record high65° (1983)
Record low-3° (1984)
Sat, 3145° / 29°0.03
45 °
McElroy, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high45°
Average low29°
Average precipitation0.03 in
Chance of precipitation17%
Record high70° (1990)
Record low3° (2023)
Sun, 0144° / 29°0.04
44 °
McElroy, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high44°
Average low29°
Average precipitation0.04 in
Chance of precipitation18%
Record high65° (1983)
Record low-6° (1984)
Mon, 0243° / 28°0.04
43 °
McElroy, Monday, 2 November
Climate normal for this date — 60-year average.
Average high43°
Average low28°
Average precipitation0.04 in
Chance of precipitation15%
Record high70° (1965)
Record low-2° (1984)
Tue, 0342° / 28°0.02
42 °
McElroy, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high42°
Average low28°
Average precipitation0.02 in
Chance of precipitation15%
Record high64° (2020)
Record low-5° (1991)
Wed, 0443° / 28°0.03
43 °
McElroy, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high43°
Average low28°
Average precipitation0.03 in
Chance of precipitation22%
Record high65° (1975)
Record low7° (1973)
Thu, 0542° / 27°0.03
42 °
McElroy, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high42°
Average low27°
Average precipitation0.03 in
Chance of precipitation17%
Record high69° (2020)
Record low1° (2003)
Fri, 0641° / 25°0.02
41 °
McElroy, Friday, 6 November
Climate normal for this date — 60-year average.
Average high41°
Average low25°
Average precipitation0.02 in
Chance of precipitation15%
Record high63° (2009)
Record low-7° (1991)
Sat, 0741° / 25°0.02
41 °
McElroy, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high41°
Average low25°
Average precipitation0.02 in
Chance of precipitation17%
Record high66° (1999)
Record low-4° (2003)
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 McElroy, 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 McElroy, 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.