Monthly outlook for Custer, ID: average high 54.8°, average low 31.9°. That is 0° above the climate normal for October. Precipitation is expected on 3 days (about 0.1 inches), against a normal of 3 days and 0.7 inches. The warmest day looks like 7 October (72.4°), the coolest 15 October (20.6°).
54.8°/31.9°
Average high / low
+0°
Above normal
3 / 3
Wet days / normal
0.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
7 October – 16 October
53.2°
55.5°
-1.3°
17 October – 26 October
57.6°
51.9°
+3.2°
27 October – 5 November
at normal
45.7°
—
October records over 66 years
81.9°2 October 2010All-time high
-8.3°10 October 2019All-time low
Climate normals and records are computed from the nearest reference point — Torreys (10 mi).
Thu, 0871° / 30°0
71 °
Custer, Thursday, 8 October
Clear. High 71°, low 30°.
Pressure30.09 inHg
Wind4.2 mph SW
Humidity34%
Visibility6.2 mi
Dew point29°
Fri, 0962° / 41°0
62 °
Custer, Friday, 9 October
Mostly clear. High 62°, low 41°.
Pressure29.71 inHg
Wind11.6 mph SW
Humidity34%
Visibility6.2 mi
Dew point28°
Sat, 1046° / 30°0.04
46 °
Custer, Saturday, 10 October
Light snow. High 46°, low 30°.
Pressure29.56 inHg
Wind8.8 mph SW
Humidity60%
Visibility6.2 mi
Dew point31°
Sun, 1146° / 30°0.04
46 °
Custer, Sunday, 11 October
Snow. High 46°, low 30°.
Pressure29.74 inHg
Wind5.1 mph NE
Humidity64%
Visibility—
Dew point30°
Mon, 1244° / 25°0
44 °
Custer, Monday, 12 October
Overcast. High 44°, low 25°.
Pressure29.91 inHg
Wind5.1 mph S
Humidity70%
Visibility—
Dew point30°
Tue, 1355° / 43°0.05
55 °
Custer, Tuesday, 13 October
Light rain. High 55°, low 43°.
Pressure29.80 inHg
Wind17.6 mph W
Humidity54%
Visibility—
Dew point37°
Wed, 1442° / 25°0.02
42 °
Custer, Wednesday, 14 October
Light snow. High 42°, low 25°.
Pressure29.88 inHg
Wind11.7 mph W
Humidity34%
Visibility—
Dew point11°
Thu, 1539° / 21°0
39 °
Custer, Thursday, 15 October
Clear. High 39°, low 21°.
Pressure30.33 inHg
Wind8.4 mph NW
Humidity33%
Visibility—
Dew point8°
Fri, 1655° / 25°0
55 °
Custer, Friday, 16 October
Overcast. High 55°, low 25°.
Pressure30.30 inHg
Wind4 mph SW
Humidity9%
Visibility—
Dew point-10°
Sat, 1756° / 36°0
56 °
Custer, Saturday, 17 October
Partly cloudy. High 56°, low 36°.
Pressure30.12 inHg
Wind5 mph NE
Humidity16%
Visibility—
Dew point5°
Sun, 1860° / 34°0
60 °
Custer, Sunday, 18 October
Clear. High 60°, low 34°.
Pressure30.09 inHg
Wind2.2 mph NW
Humidity15%
Visibility—
Dew point6°
Mon, 1961° / 38°0
61 °
Custer, Monday, 19 October
Clear. High 61°, low 38°.
Pressure30.06 inHg
Wind3.1 mph NE
Humidity19%
Visibility—
Dew point13°
Tue, 2056° / 36°0
56 °
Custer, Tuesday, 20 October
Clear. High 56°, low 36°.
Pressure30.18 inHg
Wind6.3 mph E
Humidity20%
Visibility—
Dew point11°
Wed, 2156° / 32°0
56 °
Custer, Wednesday, 21 October
Clear. High 56°, low 32°.
Pressure30.27 inHg
Wind2.9 mph E
Humidity15%
Visibility—
Dew point3°
Thu, 2257° / 34°0
57 °
Custer, Thursday, 22 October
Clear. High 57°, low 34°.
Pressure30.06 inHg
Wind2.4 mph S
Humidity16%
Visibility—
Dew point6°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 2350° / 31°0.07
50 °
Custer, Friday, 23 October
Climate normal for this date — 60-year average.
Average high50°
Average low31°
Average precipitation0.07 in
Chance of precipitation33%
Record high67° (1965)
Record low16° (1984)
Sat, 2450° / 30°0.04
50 °
Custer, Saturday, 24 October
Climate normal for this date — 60-year average.
Average high50°
Average low30°
Average precipitation0.04 in
Chance of precipitation20%
Record high66° (2005)
Record low0° (2022)
Sun, 2549° / 30°0.07
49 °
Custer, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high49°
Average low30°
Average precipitation0.07 in
Chance of precipitation25%
Record high65° (1988)
Record low6° (1970)
Mon, 2648° / 30°0.07
48 °
Custer, Monday, 26 October
Climate normal for this date — 60-year average.
Average high48°
Average low30°
Average precipitation0.07 in
Chance of precipitation32%
Record high64° (2024)
Record low12° (2010)
Tue, 2749° / 28°0.04
49 °
Custer, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high49°
Average low28°
Average precipitation0.04 in
Chance of precipitation20%
Record high64° (2008)
Record low-5° (1970)
Wed, 2847° / 28°0.07
47 °
Custer, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high47°
Average low28°
Average precipitation0.07 in
Chance of precipitation30%
Record high65° (2008)
Record low3° (2019)
Thu, 2946° / 28°0.05
46 °
Custer, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high46°
Average low28°
Average precipitation0.05 in
Chance of precipitation28%
Record high66° (1962)
Record low-3° (2019)
Fri, 3046° / 26°0.04
46 °
Custer, Friday, 30 October
Climate normal for this date — 60-year average.
Average high46°
Average low26°
Average precipitation0.04 in
Chance of precipitation28%
Record high65° (1962)
Record low-4° (1991)
Sat, 3145° / 26°0.03
45 °
Custer, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high45°
Average low26°
Average precipitation0.03 in
Chance of precipitation18%
Record high62° (1988)
Record low1° (2002)
Sun, 0145° / 25°0.05
45 °
Custer, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high45°
Average low25°
Average precipitation0.05 in
Chance of precipitation23%
Record high62° (2020)
Record low-12° (2002)
Mon, 0245° / 24°0.06
45 °
Custer, Monday, 2 November
Climate normal for this date — 60-year average.
Average high45°
Average low24°
Average precipitation0.06 in
Chance of precipitation32%
Record high65° (2020)
Record low-7° (2002)
Tue, 0346° / 24°0.04
46 °
Custer, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high46°
Average low24°
Average precipitation0.04 in
Chance of precipitation13%
Record high64° (2020)
Record low-3° (1973)
Wed, 0445° / 25°0.06
45 °
Custer, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high45°
Average low25°
Average precipitation0.06 in
Chance of precipitation30%
Record high61° (1980)
Record low-1° (1973)
Thu, 0544° / 24°0.06
44 °
Custer, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high44°
Average low24°
Average precipitation0.06 in
Chance of precipitation32%
Record high63° (1980)
Record low-4° (2015)
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 Custer, ID 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 Custer, ID 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.