Monthly outlook for Hays, MT: average high 52.1°, average low 37.7°. That is 1.4° below the climate normal for October. Precipitation is expected on 3 days (about 1.4 inches), against a normal of 3 days and 0.6 inches. The warmest day looks like 18 October (66.3°), the coolest 13 October (27.1°).
52.1°/37.7°
Average high / low
−1.4°
Below normal
3 / 3
Wet days / normal
1.4 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
11 October – 20 October
51°
55.6°
-2.5°
21 October – 30 October
54°
51.7°
+1.3°
31 October – 9 November
at normal
45.7°
—
October records over 66 years
87.1°1 October 2011All-time high
-6.3°30 October 1991All-time low
Climate normals and records are computed from the nearest reference point — Lodge Pole (5 mi).
Mon, 1232° / 29°0.46
32 °
Hays, Monday, 12 October
Snow. High 32°, low 29°.
Pressure30.18 inHg
Wind3.7 mph NW
Humidity100%
Visibility4.4 mi
Dew point31°
Tue, 1338° / 27°0
38 °
Hays, Tuesday, 13 October
Mostly clear. High 38°, low 27°.
Pressure30.09 inHg
Wind4.5 mph SW
Humidity84%
Visibility6.2 mi
Dew point31°
Wed, 1447° / 33°0
47 °
Hays, Wednesday, 14 October
Clear. High 47°, low 33°.
Pressure30.18 inHg
Wind2.3 mph SW
Humidity61%
Visibility6.2 mi
Dew point28°
Thu, 1549° / 35°0
49 °
Hays, Thursday, 15 October
Clear. High 49°, low 35°.
Pressure30.62 inHg
Wind6.2 mph N
Humidity59%
Visibility—
Dew point31°
Fri, 1664° / 38°0
64 °
Hays, Friday, 16 October
Clear. High 64°, low 38°.
Pressure30.30 inHg
Wind14.4 mph S
Humidity34%
Visibility—
Dew point29°
Sat, 1760° / 35°0
60 °
Hays, Saturday, 17 October
Overcast. High 60°, low 35°.
Pressure29.97 inHg
Wind13.2 mph SW
Humidity26%
Visibility—
Dew point20°
Sun, 1866° / 49°0
66 °
Hays, Sunday, 18 October
Clear. High 66°, low 49°.
Pressure29.88 inHg
Wind17.1 mph W
Humidity30%
Visibility—
Dew point30°
Mon, 1964° / 49°0
64 °
Hays, Monday, 19 October
Mostly clear. High 64°, low 49°.
Pressure29.85 inHg
Wind9.8 mph W
Humidity36%
Visibility—
Dew point32°
Tue, 2053° / 41°0
53 °
Hays, Tuesday, 20 October
Partly cloudy. High 53°, low 41°.
Pressure29.85 inHg
Wind22.6 mph W
Humidity35%
Visibility—
Dew point24°
Wed, 2148° / 36°0.02
48 °
Hays, Wednesday, 21 October
Light rain. High 48°, low 36°.
Pressure30.18 inHg
Wind6.6 mph N
Humidity59%
Visibility—
Dew point30°
Thu, 2251° / 38°0
51 °
Hays, Thursday, 22 October
Overcast. High 51°, low 38°.
Pressure30.00 inHg
Wind10.6 mph S
Humidity45%
Visibility—
Dew point26°
Fri, 2349° / 39°0.04
49 °
Hays, Friday, 23 October
Light rain. High 49°, low 39°.
Pressure30.15 inHg
Wind20.5 mph NW
Humidity50%
Visibility—
Dew point28°
Sat, 2452° / 35°0
52 °
Hays, Saturday, 24 October
Clear. High 52°, low 35°.
Pressure30.39 inHg
Wind7.1 mph S
Humidity38%
Visibility—
Dew point22°
Sun, 2560° / 41°0
60 °
Hays, Sunday, 25 October
Overcast. High 60°, low 41°.
Pressure30.33 inHg
Wind5.7 mph S
Humidity31%
Visibility—
Dew point24°
Mon, 2665° / 47°0
65 °
Hays, Monday, 26 October
Clear. High 65°, low 47°.
Pressure30.03 inHg
Wind9.1 mph S
Humidity25%
Visibility—
Dew point23°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2750° / 33°0.02
50 °
Hays, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high50°
Average low33°
Average precipitation0.02 in
Chance of precipitation18%
Record high71° (2024)
Record low7° (2023)
Wed, 2850° / 33°0.03
50 °
Hays, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high50°
Average low33°
Average precipitation0.03 in
Chance of precipitation23%
Record high73° (1968)
Record low6° (1984)
Thu, 2949° / 32°0.03
49 °
Hays, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high49°
Average low32°
Average precipitation0.03 in
Chance of precipitation20%
Record high75° (1968)
Record low0° (1991)
Fri, 3048° / 30°0.03
48 °
Hays, Friday, 30 October
Climate normal for this date — 60-year average.
Average high48°
Average low30°
Average precipitation0.03 in
Chance of precipitation20%
Record high67° (1990)
Record low-6° (1991)
Sat, 3147° / 31°0.04
47 °
Hays, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high47°
Average low31°
Average precipitation0.04 in
Chance of precipitation20%
Record high69° (1987)
Record low-2° (1984)
Sun, 0147° / 31°0.02
47 °
Hays, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high47°
Average low31°
Average precipitation0.02 in
Chance of precipitation15%
Record high69° (1965)
Record low-9° (1984)
Mon, 0247° / 31°0.02
47 °
Hays, Monday, 2 November
Climate normal for this date — 60-year average.
Average high47°
Average low31°
Average precipitation0.02 in
Chance of precipitation10%
Record high67° (1965)
Record low-9° (1991)
Tue, 0347° / 31°0.03
47 °
Hays, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high47°
Average low31°
Average precipitation0.03 in
Chance of precipitation17%
Record high67° (1981)
Record low-11° (1991)
Wed, 0448° / 32°0.02
48 °
Hays, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high48°
Average low32°
Average precipitation0.02 in
Chance of precipitation15%
Record high69° (1975)
Record low4° (2017)
Thu, 0547° / 30°0.04
47 °
Hays, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high47°
Average low30°
Average precipitation0.04 in
Chance of precipitation18%
Record high69° (2010)
Record low-9° (2003)
Fri, 0645° / 29°0.03
45 °
Hays, Friday, 6 November
Climate normal for this date — 60-year average.
Average high45°
Average low29°
Average precipitation0.03 in
Chance of precipitation17%
Record high69° (2010)
Record low4° (2017)
Sat, 0744° / 30°0.02
44 °
Hays, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high44°
Average low30°
Average precipitation0.02 in
Chance of precipitation15%
Record high69° (2010)
Record low1° (1991)
Sun, 0844° / 28°0.06
44 °
Hays, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high44°
Average low28°
Average precipitation0.06 in
Chance of precipitation25%
Record high67° (1999)
Record low6° (2003)
Mon, 0942° / 26°0.05
42 °
Hays, Monday, 9 November
Climate normal for this date — 60-year average.
Average high42°
Average low26°
Average precipitation0.05 in
Chance of precipitation28%
Record high66° (2016)
Record low3° (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 Hays, 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 Hays, 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.