Monthly outlook for Hays, MT: average high 55.9°, average low 41.4°. That is 0.9° above the climate normal for October. Precipitation is expected on 1 day (about 0.3 inches), against a normal of 3 days and 0.5 inches. The warmest day looks like 17 October (69.5°), the coolest 13 October (28.2°).
55.9°/41.4°
Average high / low
+0.9°
Above normal
1 / 3
Wet days / normal
0.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
12 October – 21 October
54.5°
55.5°
-0.6°
22 October – 31 October
58.3°
50.9°
+4.1°
1 November – 10 November
at normal
45.1°
—
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).
Tue, 1343° / 28°0
43 °
Hays, Tuesday, 13 October
Clear. High 43°, low 28°.
Pressure30.12 inHg
Wind2.9 mph SW
Humidity79%
Visibility6.2 mi
Dew point31°
Wed, 1454° / 34°0
54 °
Hays, Wednesday, 14 October
Clear. High 54°, low 34°.
Pressure30.06 inHg
Wind3.4 mph SW
Humidity54%
Visibility6.2 mi
Dew point32°
Thu, 1549° / 36°0
49 °
Hays, Thursday, 15 October
Clear. High 49°, low 36°.
Pressure30.68 inHg
Wind6.9 mph NW
Humidity55%
Visibility6.2 mi
Dew point24°
Fri, 1668° / 41°0
68 °
Hays, Friday, 16 October
Clear. High 68°, low 41°.
Pressure30.27 inHg
Wind16.3 mph S
Humidity32%
Visibility—
Dew point30°
Sat, 1770° / 54°0
70 °
Hays, Saturday, 17 October
Overcast. High 70°, low 54°.
Pressure29.80 inHg
Wind16.9 mph SW
Humidity29%
Visibility—
Dew point31°
Sun, 1860° / 48°0
60 °
Hays, Sunday, 18 October
Overcast. High 60°, low 48°.
Pressure29.83 inHg
Wind20.3 mph W
Humidity37%
Visibility—
Dew point33°
Mon, 1960° / 45°0
60 °
Hays, Monday, 19 October
Overcast. High 60°, low 45°.
Pressure29.83 inHg
Wind15 mph SE
Humidity40%
Visibility—
Dew point30°
Tue, 2056° / 44°0
56 °
Hays, Tuesday, 20 October
Overcast. High 56°, low 44°.
Pressure29.65 inHg
Wind12 mph N
Humidity45%
Visibility—
Dew point35°
Wed, 2151° / 40°0.01
51 °
Hays, Wednesday, 21 October
Light rain. High 51°, low 40°.
Pressure30.00 inHg
Wind10.6 mph SW
Humidity56%
Visibility—
Dew point31°
Thu, 2252° / 40°0
52 °
Hays, Thursday, 22 October
Overcast. High 52°, low 40°.
Pressure30.15 inHg
Wind11.6 mph N
Humidity36%
Visibility—
Dew point23°
Fri, 2360° / 40°0
60 °
Hays, Friday, 23 October
Clear. High 60°, low 40°.
Pressure30.03 inHg
Wind15.9 mph S
Humidity39%
Visibility—
Dew point28°
Sat, 2453° / 44°0
53 °
Hays, Saturday, 24 October
Overcast. High 53°, low 44°.
Pressure30.03 inHg
Wind13.5 mph NW
Humidity37%
Visibility—
Dew point24°
Sun, 2559° / 43°0
59 °
Hays, Sunday, 25 October
Clear. High 59°, low 43°.
Pressure30.12 inHg
Wind6.9 mph S
Humidity40%
Visibility—
Dew point30°
Mon, 2662° / 47°0
62 °
Hays, Monday, 26 October
Clear. High 62°, low 47°.
Pressure29.94 inHg
Wind12.3 mph W
Humidity36%
Visibility—
Dew point30°
Tue, 2763° / 50°0
63 °
Hays, Tuesday, 27 October
Overcast. High 63°, low 50°.
Pressure29.71 inHg
Wind15.9 mph W
Humidity29%
Visibility—
Dew point26°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Tue, 1041° / 26°0.04
41 °
Hays, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high41°
Average low26°
Average precipitation0.04 in
Chance of precipitation30%
Record high63° (1989)
Record low2° (2019)
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.