Monthly outlook for Siskiyou, OR: average high 38°, average low 27.6°. That is 5.9° below the climate normal for November. Precipitation is expected on 10 days (about 3.1 inches), against a normal of 7 days and 2.4 inches. The warmest day looks like 14 November (43.6°), the coolest 26 November (20.7°).
38°/27.6°
Average high / low
−5.9°
Below normal
10 / 7
Wet days / normal
3.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
14 November – 23 November
39.6°
49.9°
-5.8°
24 November – 3 December
35.5°
46.3°
-6°
4 December – 13 December
at normal
44.6°
—
November records over 66 years
76.5°1 November 2020All-time high
6.6°11 November 1985All-time low
Climate normals and records are computed from the nearest reference point — Hornbrook (12 mi).
Sun, 1540° / 30°0.47
40 °
Siskiyou, Sunday, 15 November
Snow. High 40°, low 30°.
Pressure29.97 inHg
Wind3 mph S
Humidity96%
Visibility6.2 mi
Dew point41°
Mon, 1637° / 26°0.19
37 °
Siskiyou, Monday, 16 November
Snow. High 37°, low 26°.
Pressure30.12 inHg
Wind3 mph NW
Humidity68%
Visibility6.2 mi
Dew point28°
Tue, 1738° / 24°0.06
38 °
Siskiyou, Tuesday, 17 November
Light snow. High 38°, low 24°.
Pressure29.94 inHg
Wind7.8 mph SE
Humidity68%
Visibility6.2 mi
Dew point26°
Wed, 1835° / 28°0.43
35 °
Siskiyou, Wednesday, 18 November
Snow. High 35°, low 28°.
Pressure29.77 inHg
Wind9.6 mph SE
Humidity76%
Visibility6.2 mi
Dew point30°
Thu, 1941° / 25°0.04
41 °
Siskiyou, Thursday, 19 November
Light snow. High 41°, low 25°.
Pressure29.94 inHg
Wind4.7 mph SE
Humidity79%
Visibility—
Dew point29°
Fri, 2043° / 27°0
43 °
Siskiyou, Friday, 20 November
Overcast. High 43°, low 27°.
Pressure30.00 inHg
Wind4.7 mph SE
Humidity82%
Visibility—
Dew point31°
Sat, 2140° / 31°0.16
40 °
Siskiyou, Saturday, 21 November
Rain. High 40°, low 31°.
Pressure29.97 inHg
Wind8.3 mph SE
Humidity87%
Visibility—
Dew point32°
Sun, 2239° / 30°0.09
39 °
Siskiyou, Sunday, 22 November
Light rain. High 39°, low 30°.
Pressure30.06 inHg
Wind5.8 mph SE
Humidity93%
Visibility—
Dew point34°
Mon, 2339° / 34°0.35
39 °
Siskiyou, Monday, 23 November
Rain. High 39°, low 34°.
Pressure29.83 inHg
Wind12.6 mph S
Humidity93%
Visibility—
Dew point34°
Tue, 2436° / 31°0.84
36 °
Siskiyou, Tuesday, 24 November
Snow. High 36°, low 31°.
Pressure29.74 inHg
Wind5.1 mph SE
Humidity95%
Visibility—
Dew point34°
Wed, 2536° / 23°0.09
36 °
Siskiyou, Wednesday, 25 November
Snow. High 36°, low 23°.
Pressure30.33 inHg
Wind2.8 mph SW
Humidity97%
Visibility—
Dew point30°
Thu, 2637° / 21°0
37 °
Siskiyou, Thursday, 26 November
Partly cloudy. High 37°, low 21°.
Pressure30.33 inHg
Wind6 mph SE
Humidity79%
Visibility—
Dew point24°
Fri, 2736° / 24°0.02
36 °
Siskiyou, Friday, 27 November
Light snow. High 36°, low 24°.
Pressure29.94 inHg
Wind6.3 mph S
Humidity91%
Visibility—
Dew point27°
Sat, 2832° / 27°0.35
32 °
Siskiyou, Saturday, 28 November
Snow. High 32°, low 27°.
Pressure30.12 inHg
Wind4.5 mph SE
Humidity96%
Visibility—
Dew point29°
Sun, 2937° / 25°0
37 °
Siskiyou, Sunday, 29 November
Overcast. High 37°, low 25°.
Pressure30.30 inHg
Wind3.6 mph S
Humidity92%
Visibility—
Dew point30°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 3046° / 33°0.15
46 °
Siskiyou, Monday, 30 November
Climate normal for this date — 60-year average.
Average high46°
Average low33°
Average precipitation0.15 in
Chance of precipitation48%
Record high58° (2008)
Record low18° (1985)
Tue, 0146° / 33°0.19
46 °
Siskiyou, Tuesday, 1 December
Climate normal for this date — 60-year average.
Average high46°
Average low33°
Average precipitation0.19 in
Chance of precipitation47%
Record high61° (2021)
Record low17° (1967)
Wed, 0245° / 33°0.25
45 °
Siskiyou, Wednesday, 2 December
Climate normal for this date — 60-year average.
Average high45°
Average low33°
Average precipitation0.25 in
Chance of precipitation47%
Record high57° (2021)
Record low17° (2022)
Thu, 0346° / 33°0.14
46 °
Siskiyou, Thursday, 3 December
Climate normal for this date — 60-year average.
Average high46°
Average low33°
Average precipitation0.14 in
Chance of precipitation38%
Record high57° (2019)
Record low21° (2022)
Fri, 0446° / 32°0.17
46 °
Siskiyou, Friday, 4 December
Climate normal for this date — 60-year average.
Average high46°
Average low32°
Average precipitation0.17 in
Chance of precipitation45%
Record high58° (2023)
Record low15° (1998)
Sat, 0546° / 33°0.16
46 °
Siskiyou, Saturday, 5 December
Climate normal for this date — 60-year average.
Average high46°
Average low33°
Average precipitation0.16 in
Chance of precipitation43%
Record high58° (2023)
Record low12° (1972)
Sun, 0645° / 33°0.19
45 °
Siskiyou, Sunday, 6 December
Climate normal for this date — 60-year average.
Average high45°
Average low33°
Average precipitation0.19 in
Chance of precipitation55%
Record high56° (2025)
Record low12° (1960)
Mon, 0744° / 32°0.17
44 °
Siskiyou, Monday, 7 December
Climate normal for this date — 60-year average.
Average high44°
Average low32°
Average precipitation0.17 in
Chance of precipitation48%
Record high56° (1976)
Record low11° (1972)
Tue, 0845° / 31°0.17
45 °
Siskiyou, Tuesday, 8 December
Climate normal for this date — 60-year average.
Average high45°
Average low31°
Average precipitation0.17 in
Chance of precipitation40%
Record high57° (1981)
Record low-7° (1972)
Wed, 0945° / 32°0.11
45 °
Siskiyou, Wednesday, 9 December
Climate normal for this date — 60-year average.
Average high45°
Average low32°
Average precipitation0.11 in
Chance of precipitation37%
Record high60° (1995)
Record low-11° (1972)
Thu, 1045° / 31°0.19
45 °
Siskiyou, Thursday, 10 December
Climate normal for this date — 60-year average.
Average high45°
Average low31°
Average precipitation0.19 in
Chance of precipitation40%
Record high59° (2025)
Record low-5° (1972)
Fri, 1144° / 31°0.17
44 °
Siskiyou, Friday, 11 December
Climate normal for this date — 60-year average.
Average high44°
Average low31°
Average precipitation0.17 in
Chance of precipitation48%
Record high56° (2004)
Record low-4° (1972)
Sat, 1244° / 32°0.2
44 °
Siskiyou, Saturday, 12 December
Climate normal for this date — 60-year average.
Average high44°
Average low32°
Average precipitation0.2 in
Chance of precipitation47%
Record high58° (2004)
Record low12° (1985)
Sun, 1343° / 31°0.25
43 °
Siskiyou, Sunday, 13 December
Climate normal for this date — 60-year average.
Average high43°
Average low31°
Average precipitation0.25 in
Chance of precipitation53%
Record high54° (1976)
Record low8° (1967)
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 Siskiyou, OR 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 Siskiyou, OR 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.