Monthly outlook for Castle Rocks, ID: average high 47.4°, average low 31°. That is 1.1° below the climate normal for October. Precipitation is expected on 5 days (about 0.9 inches), against a normal of 4 days and 1.0 inches. The warmest day looks like 26 October (56°), the coolest 31 October (24.3°).
47.4°/31°
Average high / low
−1.1°
Below normal
5 / 4
Wet days / normal
0.9 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
23 October – 1 November
46.5°
50.6°
-2.3°
2 November – 11 November
48.9°
45.8°
+1.7°
12 November – 21 November
at normal
40.7°
—
October records over 66 years
84.9°2 October 2010All-time high
-1.3°27 October 1970All-time low
Sat, 2453° / 28°0
53 °
Castle Rocks, Saturday, 24 October
Overcast. High 53°, low 28°.
Pressure30.24 inHg
Wind5.2 mph SE
Humidity59%
Visibility6.2 mi
Dew point35°
Sun, 2555° / 31°0
55 °
Castle Rocks, Sunday, 25 October
Partly cloudy. High 55°, low 31°.
Pressure30.15 inHg
Wind4.9 mph E
Humidity55%
Visibility6.2 mi
Dew point34°
Mon, 2656° / 35°0.07
56 °
Castle Rocks, Monday, 26 October
Light rain. High 56°, low 35°.
Pressure30.03 inHg
Wind12.3 mph SE
Humidity49%
Visibility6.2 mi
Dew point34°
Tue, 2746° / 33°0.16
46 °
Castle Rocks, Tuesday, 27 October
Light rain. High 46°, low 33°.
Pressure30.18 inHg
Wind9.1 mph W
Humidity62%
Visibility—
Dew point30°
Wed, 2849° / 28°0
49 °
Castle Rocks, Wednesday, 28 October
Overcast. High 49°, low 28°.
Pressure30.30 inHg
Wind8.5 mph E
Humidity55%
Visibility—
Dew point28°
Thu, 2938° / 31°0.09
38 °
Castle Rocks, Thursday, 29 October
Snow. High 38°, low 31°.
Pressure29.94 inHg
Wind6.9 mph W
Humidity90%
Visibility—
Dew point32°
Fri, 3038° / 27°0
38 °
Castle Rocks, Friday, 30 October
Partly cloudy. High 38°, low 27°.
Pressure30.06 inHg
Wind8.7 mph W
Humidity62%
Visibility—
Dew point23°
Sat, 3142° / 24°0
42 °
Castle Rocks, Saturday, 31 October
Clear. High 42°, low 24°.
Pressure30.21 inHg
Wind6.9 mph W
Humidity43%
Visibility—
Dew point15°
Sun, 0144° / 26°0
44 °
Castle Rocks, Sunday, 1 November
Partly cloudy. High 44°, low 26°.
Pressure30.30 inHg
Wind6.2 mph NE
Humidity33%
Visibility—
Dew point12°
Mon, 0246° / 29°0
46 °
Castle Rocks, Monday, 2 November
Clear. High 46°, low 29°.
Pressure30.30 inHg
Wind6.3 mph NE
Humidity32%
Visibility—
Dew point13°
Tue, 0349° / 30°0
49 °
Castle Rocks, Tuesday, 3 November
Clear. High 49°, low 30°.
Pressure30.27 inHg
Wind8.1 mph SE
Humidity18%
Visibility—
Dew point2°
Wed, 0452° / 33°0
52 °
Castle Rocks, Wednesday, 4 November
Partly cloudy. High 52°, low 33°.
Pressure30.27 inHg
Wind8 mph SE
Humidity20%
Visibility—
Dew point7°
Thu, 0545° / 34°0.19
45 °
Castle Rocks, Thursday, 5 November
Rain. High 45°, low 34°.
Pressure30.18 inHg
Wind7.5 mph NE
Humidity87%
Visibility—
Dew point36°
Fri, 0648° / 37°0
48 °
Castle Rocks, Friday, 6 November
Overcast. High 48°, low 37°.
Pressure30.24 inHg
Wind6.9 mph NW
Humidity67%
Visibility—
Dew point33°
Sat, 0753° / 37°0
53 °
Castle Rocks, Saturday, 7 November
Overcast. High 53°, low 37°.
Pressure30.30 inHg
Wind5.2 mph NE
Humidity47%
Visibility—
Dew point29°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 0845° / 29°0.07
45 °
Castle Rocks, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high45°
Average low29°
Average precipitation0.07 in
Chance of precipitation37%
Record high61° (2016)
Record low2° (1994)
Mon, 0944° / 28°0.09
44 °
Castle Rocks, Monday, 9 November
Climate normal for this date — 60-year average.
Average high44°
Average low28°
Average precipitation0.09 in
Chance of precipitation35%
Record high62° (2016)
Record low13° (1998)
Tue, 1044° / 28°0.07
44 °
Castle Rocks, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high44°
Average low28°
Average precipitation0.07 in
Chance of precipitation28%
Record high63° (2016)
Record low9° (2022)
Wed, 1143° / 28°0.06
43 °
Castle Rocks, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high43°
Average low28°
Average precipitation0.06 in
Chance of precipitation33%
Record high62° (2016)
Record low7° (2022)
Thu, 1243° / 27°0.07
43 °
Castle Rocks, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high43°
Average low27°
Average precipitation0.07 in
Chance of precipitation28%
Record high64° (1999)
Record low6° (1982)
Fri, 1343° / 27°0.08
43 °
Castle Rocks, Friday, 13 November
Climate normal for this date — 60-year average.
Average high43°
Average low27°
Average precipitation0.08 in
Chance of precipitation32%
Record high63° (1999)
Record low2° (2000)
Sat, 1442° / 26°0.06
42 °
Castle Rocks, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high42°
Average low26°
Average precipitation0.06 in
Chance of precipitation27%
Record high64° (1999)
Record low-7° (1964)
Sun, 1542° / 25°0.05
42 °
Castle Rocks, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high42°
Average low25°
Average precipitation0.05 in
Chance of precipitation20%
Record high59° (1999)
Record low-6° (1964)
Mon, 1642° / 26°0.07
42 °
Castle Rocks, Monday, 16 November
Climate normal for this date — 60-year average.
Average high42°
Average low26°
Average precipitation0.07 in
Chance of precipitation33%
Record high60° (1999)
Record low-8° (2014)
Tue, 1740° / 26°0.09
40 °
Castle Rocks, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high40°
Average low26°
Average precipitation0.09 in
Chance of precipitation38%
Record high58° (2008)
Record low-2° (2000)
Wed, 1840° / 24°0.08
40 °
Castle Rocks, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high40°
Average low24°
Average precipitation0.08 in
Chance of precipitation28%
Record high58° (2008)
Record low0° (2014)
Thu, 1939° / 23°0.07
39 °
Castle Rocks, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high39°
Average low23°
Average precipitation0.07 in
Chance of precipitation32%
Record high53° (1989)
Record low0° (1985)
Fri, 2039° / 24°0.07
39 °
Castle Rocks, Friday, 20 November
Climate normal for this date — 60-year average.
Average high39°
Average low24°
Average precipitation0.07 in
Chance of precipitation37%
Record high54° (1989)
Record low2° (2011)
Sat, 2138° / 22°0.07
38 °
Castle Rocks, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high38°
Average low22°
Average precipitation0.07 in
Chance of precipitation33%
Record high55° (2002)
Record low-4° (1994)
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 Castle Rocks, 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 Castle Rocks, 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.