Monthly outlook for Granite, ID: average high 58.5°, average low 37.3°. That is 0.8° above the climate normal for October. Precipitation is expected on 2 days (about 0.7 inches), against a normal of 5 days and 1.3 inches. The warmest day looks like 8 October (73.5°), the coolest 16 October (28.9°).
58.5°/37.3°
Average high / low
+0.8°
Above normal
2 / 5
Wet days / normal
0.7 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 October – 17 October
55.9°
58.2°
-1.3°
18 October – 27 October
62.8°
53.7°
+5.1°
28 October – 6 November
at normal
47.1°
—
October records over 66 years
84.4°1 October 1992All-time high
6.1°25 October 2020All-time low
Climate normals and records are computed from the nearest reference point — Athol (5 mi).
Fri, 0964° / 36°0
64 °
Granite, Friday, 9 October
Overcast. High 64°, low 36°.
Pressure29.59 inHg
Wind11 mph SW
Humidity40%
Visibility6.2 mi
Dew point40°
Sat, 1052° / 29°0
52 °
Granite, Saturday, 10 October
Mostly clear. High 52°, low 29°.
Pressure29.80 inHg
Wind2.9 mph S
Humidity50%
Visibility6.2 mi
Dew point32°
Sun, 1148° / 39°0
48 °
Granite, Sunday, 11 October
Light rain. High 48°, low 39°.
Pressure30.00 inHg
Wind12.6 mph NE
Humidity60%
Visibility6.2 mi
Dew point26°
Mon, 1253° / 35°0
53 °
Granite, Monday, 12 October
Clear. High 53°, low 35°.
Pressure29.94 inHg
Wind5.5 mph NE
Humidity51%
Visibility6.2 mi
Dew point31°
Tue, 1358° / 34°0
58 °
Granite, Tuesday, 13 October
Clear. High 58°, low 34°.
Pressure30.03 inHg
Wind2.1 mph S
Humidity67%
Visibility—
Dew point38°
Wed, 1441° / 37°0.66
41 °
Granite, Wednesday, 14 October
Rain. High 41°, low 37°.
Pressure29.91 inHg
Wind3.7 mph S
Humidity92%
Visibility—
Dew point38°
Thu, 1552° / 34°0.01
52 °
Granite, Thursday, 15 October
Light rain. High 52°, low 34°.
Pressure30.53 inHg
Wind5.9 mph NE
Humidity74%
Visibility—
Dew point37°
Fri, 1655° / 29°0
55 °
Granite, Friday, 16 October
Clear. High 55°, low 29°.
Pressure30.53 inHg
Wind6.6 mph NE
Humidity41%
Visibility—
Dew point22°
Sat, 1763° / 32°0
63 °
Granite, Saturday, 17 October
Clear. High 63°, low 32°.
Pressure30.18 inHg
Wind6.4 mph NE
Humidity36%
Visibility—
Dew point24°
Sun, 1860° / 37°0
60 °
Granite, Sunday, 18 October
Mostly clear. High 60°, low 37°.
Pressure30.06 inHg
Wind6 mph SW
Humidity39%
Visibility—
Dew point28°
Mon, 1962° / 44°0
62 °
Granite, Monday, 19 October
Mostly clear. High 62°, low 44°.
Pressure30.21 inHg
Wind3.7 mph SW
Humidity60%
Visibility—
Dew point42°
Tue, 2064° / 40°0
64 °
Granite, Tuesday, 20 October
Clear. High 64°, low 40°.
Pressure30.18 inHg
Wind2.3 mph SW
Humidity52%
Visibility—
Dew point38°
Wed, 2166° / 42°0
66 °
Granite, Wednesday, 21 October
Overcast. High 66°, low 42°.
Pressure30.12 inHg
Wind2.3 mph NE
Humidity45%
Visibility—
Dew point36°
Thu, 2268° / 42°0
68 °
Granite, Thursday, 22 October
Clear. High 68°, low 42°.
Pressure30.09 inHg
Wind2.6 mph NE
Humidity45%
Visibility—
Dew point37°
Fri, 2357° / 45°0.04
57 °
Granite, Friday, 23 October
Light rain. High 57°, low 45°.
Pressure30.06 inHg
Wind4.5 mph S
Humidity70%
Visibility—
Dew point42°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 2453° / 37°0.08
53 °
Granite, Saturday, 24 October
Climate normal for this date — 60-year average.
Average high53°
Average low37°
Average precipitation0.08 in
Chance of precipitation32%
Record high67° (1992)
Record low19° (2020)
Sun, 2553° / 37°0.11
53 °
Granite, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high53°
Average low37°
Average precipitation0.11 in
Chance of precipitation45%
Record high68° (1966)
Record low6° (2020)
Mon, 2651° / 37°0.11
51 °
Granite, Monday, 26 October
Climate normal for this date — 60-year average.
Average high51°
Average low37°
Average precipitation0.11 in
Chance of precipitation45%
Record high68° (1986)
Record low10° (2020)
Tue, 2750° / 36°0.08
50 °
Granite, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high50°
Average low36°
Average precipitation0.08 in
Chance of precipitation42%
Record high65° (1965)
Record low17° (2020)
Wed, 2849° / 36°0.11
49 °
Granite, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high49°
Average low36°
Average precipitation0.11 in
Chance of precipitation52%
Record high63° (1987)
Record low21° (2023)
Thu, 2948° / 34°0.11
48 °
Granite, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high48°
Average low34°
Average precipitation0.11 in
Chance of precipitation37%
Record high65° (1983)
Record low15° (1991)
Fri, 3048° / 34°0.1
48 °
Granite, Friday, 30 October
Climate normal for this date — 60-year average.
Average high48°
Average low34°
Average precipitation0.1 in
Chance of precipitation38%
Record high64° (2008)
Record low19° (2019)
Sat, 3147° / 35°0.13
47 °
Granite, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high47°
Average low35°
Average precipitation0.13 in
Chance of precipitation45%
Record high65° (1988)
Record low14° (1984)
Sun, 0147° / 35°0.13
47 °
Granite, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high47°
Average low35°
Average precipitation0.13 in
Chance of precipitation43%
Record high64° (1988)
Record low18° (1984)
Mon, 0247° / 34°0.13
47 °
Granite, Monday, 2 November
Climate normal for this date — 60-year average.
Average high47°
Average low34°
Average precipitation0.13 in
Chance of precipitation43%
Record high63° (1981)
Record low10° (1991)
Tue, 0347° / 35°0.09
47 °
Granite, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high47°
Average low35°
Average precipitation0.09 in
Chance of precipitation37%
Record high60° (1975)
Record low20° (2017)
Wed, 0446° / 35°0.19
46 °
Granite, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high46°
Average low35°
Average precipitation0.19 in
Chance of precipitation52%
Record high65° (1975)
Record low18° (2017)
Thu, 0546° / 34°0.11
46 °
Granite, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high46°
Average low34°
Average precipitation0.11 in
Chance of precipitation47%
Record high64° (1975)
Record low16° (1961)
Fri, 0645° / 34°0.15
45 °
Granite, Friday, 6 November
Climate normal for this date — 60-year average.
Average high45°
Average low34°
Average precipitation0.15 in
Chance of precipitation57%
Record high60° (2012)
Record low17° (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 Granite, 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 Granite, 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.