Monthly outlook for Grayling, MT: average high 48.2°, average low 30°. That is 0.1° below the climate normal for October. Precipitation is expected on 5 days (about 2.1 inches), against a normal of 5 days and 1.1 inches. The warmest day looks like 9 October (70.2°), the coolest 16 October (22.7°).
48.2°/30°
Average high / low
−0.1°
Below normal
5 / 5
Wet days / normal
2.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 October – 18 October
49.7°
49.4°
+0.2°
19 October – 28 October
45.6°
45.4°
+0.1°
29 October – 7 November
at normal
39°
—
October records over 66 years
74.7°2 October 2010All-time high
-5.3°30 October 2019All-time low
Sat, 1056° / 28°0.16
56 °
Grayling, Saturday, 10 October
Snow. High 56°, low 28°.
Pressure29.65 inHg
Wind12.6 mph S
Humidity66%
Visibility6.2 mi
Dew point38°
Sun, 1142° / 35°1.12
42 °
Grayling, Sunday, 11 October
Snow. High 42°, low 35°.
Pressure29.71 inHg
Wind1.4 mph SW
Humidity98%
Visibility1.4 mi
Dew point39°
Mon, 1239° / 32°0.44
39 °
Grayling, Monday, 12 October
Snow. High 39°, low 32°.
Pressure29.85 inHg
Wind3.4 mph S
Humidity86%
Visibility6.2 mi
Dew point31°
Tue, 1346° / 31°0
46 °
Grayling, Tuesday, 13 October
Light snow. High 46°, low 31°.
Pressure29.88 inHg
Wind4.7 mph N
Humidity72%
Visibility—
Dew point33°
Wed, 1445° / 27°0
45 °
Grayling, Wednesday, 14 October
Partly cloudy. High 45°, low 27°.
Pressure30.09 inHg
Wind7.7 mph W
Humidity76%
Visibility—
Dew point31°
Thu, 1541° / 27°0.02
41 °
Grayling, Thursday, 15 October
Snow. High 41°, low 27°.
Pressure30.24 inHg
Wind6.8 mph NW
Humidity55%
Visibility—
Dew point24°
Fri, 1651° / 23°0
51 °
Grayling, Friday, 16 October
Clear. High 51°, low 23°.
Pressure30.45 inHg
Wind4.5 mph SW
Humidity41%
Visibility—
Dew point19°
Sat, 1753° / 28°0
53 °
Grayling, Saturday, 17 October
Overcast. High 53°, low 28°.
Pressure30.30 inHg
Wind5.2 mph S
Humidity45%
Visibility—
Dew point26°
Sun, 1853° / 31°0
53 °
Grayling, Sunday, 18 October
Overcast. High 53°, low 31°.
Pressure30.12 inHg
Wind4.8 mph SW
Humidity44%
Visibility—
Dew point26°
Mon, 1955° / 32°0
55 °
Grayling, Monday, 19 October
Partly cloudy. High 55°, low 32°.
Pressure29.97 inHg
Wind10.3 mph SW
Humidity40%
Visibility—
Dew point26°
Tue, 2051° / 33°0
51 °
Grayling, Tuesday, 20 October
Partly cloudy. High 51°, low 33°.
Pressure29.85 inHg
Wind13.2 mph SW
Humidity39%
Visibility—
Dew point24°
Wed, 2138° / 34°0.32
38 °
Grayling, Wednesday, 21 October
Snow. High 38°, low 34°.
Pressure30.06 inHg
Wind4.1 mph NE
Humidity91%
Visibility—
Dew point35°
Thu, 2245° / 31°0
45 °
Grayling, Thursday, 22 October
Overcast. High 45°, low 31°.
Pressure30.09 inHg
Wind4.3 mph SE
Humidity76%
Visibility—
Dew point33°
Fri, 2341° / 31°0.05
41 °
Grayling, Friday, 23 October
Snow. High 41°, low 31°.
Pressure29.97 inHg
Wind4.2 mph SW
Humidity91%
Visibility—
Dew point37°
Sat, 2443° / 28°0
43 °
Grayling, Saturday, 24 October
Overcast. High 43°, low 28°.
Pressure30.00 inHg
Wind3.4 mph SW
Humidity71%
Visibility—
Dew point31°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 2545° / 27°0.07
45 °
Grayling, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high45°
Average low27°
Average precipitation0.07 in
Chance of precipitation33%
Record high60° (2005)
Record low-3° (2020)
Mon, 2644° / 27°0.11
44 °
Grayling, Monday, 26 October
Climate normal for this date — 60-year average.
Average high44°
Average low27°
Average precipitation0.11 in
Chance of precipitation38%
Record high56° (1999)
Record low-5° (2020)
Tue, 2743° / 25°0.05
43 °
Grayling, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high43°
Average low25°
Average precipitation0.05 in
Chance of precipitation27%
Record high57° (1977)
Record low1° (2019)
Wed, 2842° / 25°0.08
42 °
Grayling, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high42°
Average low25°
Average precipitation0.08 in
Chance of precipitation38%
Record high59° (1962)
Record low-1° (2019)
Thu, 2941° / 25°0.07
41 °
Grayling, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high41°
Average low25°
Average precipitation0.07 in
Chance of precipitation33%
Record high61° (1962)
Record low-5° (1971)
Fri, 3040° / 23°0.07
40 °
Grayling, Friday, 30 October
Climate normal for this date — 60-year average.
Average high40°
Average low23°
Average precipitation0.07 in
Chance of precipitation35%
Record high61° (1962)
Record low-5° (2019)
Sat, 3140° / 23°0.08
40 °
Grayling, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high40°
Average low23°
Average precipitation0.08 in
Chance of precipitation47%
Record high55° (2008)
Record low-2° (2006)
Sun, 0139° / 23°0.06
39 °
Grayling, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high39°
Average low23°
Average precipitation0.06 in
Chance of precipitation32%
Record high57° (2014)
Record low-2° (2002)
Mon, 0238° / 22°0.07
38 °
Grayling, Monday, 2 November
Climate normal for this date — 60-year average.
Average high38°
Average low22°
Average precipitation0.07 in
Chance of precipitation42%
Record high58° (1981)
Record low-8° (1991)
Tue, 0339° / 22°0.07
39 °
Grayling, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high39°
Average low22°
Average precipitation0.07 in
Chance of precipitation28%
Record high56° (2020)
Record low-4° (1991)
Wed, 0439° / 22°0.08
39 °
Grayling, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high39°
Average low22°
Average precipitation0.08 in
Chance of precipitation38%
Record high55° (2020)
Record low-1° (1973)
Thu, 0539° / 23°0.09
39 °
Grayling, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high39°
Average low23°
Average precipitation0.09 in
Chance of precipitation48%
Record high53° (1987)
Record low-1° (2003)
Fri, 0638° / 22°0.09
38 °
Grayling, Friday, 6 November
Climate normal for this date — 60-year average.
Average high38°
Average low22°
Average precipitation0.09 in
Chance of precipitation45%
Record high57° (2020)
Record low-4° (2003)
Sat, 0738° / 22°0.1
38 °
Grayling, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high38°
Average low22°
Average precipitation0.1 in
Chance of precipitation50%
Record high56° (1999)
Record low-5° (1990)
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 Grayling, 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 Grayling, 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.