Monthly outlook for Shannon, OR: average high 59.8°, average low 42.3°. That is 0.7° below the climate normal for October. Precipitation is expected on 5 days (about 0.9 inches), against a normal of 6 days and 3.4 inches. The warmest day looks like 16 October (74.2°), the coolest 24 October (35.5°).
59.8°/42.3°
Average high / low
−0.7°
Below normal
5 / 6
Wet days / normal
0.9 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
16 October – 25 October
63.2°
62.4°
+0.4°
26 October – 4 November
54.3°
58.8°
-2.5°
5 November – 14 November
at normal
56°
—
October records over 66 years
93.9°2 October 1980All-time high
31.1°31 October 2019All-time low
Climate normals and records are computed from the nearest reference point — Mapleton (13 mi).
Sat, 1767° / 45°0
67 °
Shannon, Saturday, 17 October
Light rain. High 67°, low 45°.
Pressure30.27 inHg
Wind5 mph N
Humidity72%
Visibility6.2 mi
Dew point52°
Sun, 1866° / 38°0
66 °
Shannon, Sunday, 18 October
Mostly clear. High 66°, low 38°.
Pressure30.09 inHg
Wind4.4 mph NE
Humidity50%
Visibility6.2 mi
Dew point40°
Mon, 1960° / 47°0.28
60 °
Shannon, Monday, 19 October
Rain. High 60°, low 47°.
Pressure29.91 inHg
Wind2.4 mph S
Humidity49%
Visibility6.2 mi
Dew point38°
Tue, 2063° / 43°0
63 °
Shannon, Tuesday, 20 October
Clear. High 63°, low 43°.
Pressure29.97 inHg
Wind3.4 mph NE
Humidity74%
Visibility6.2 mi
Dew point47°
Wed, 2171° / 44°0
71 °
Shannon, Wednesday, 21 October
Clear. High 71°, low 44°.
Pressure29.97 inHg
Wind6.3 mph NW
Humidity56%
Visibility—
Dew point44°
Thu, 2257° / 43°0.01
57 °
Shannon, Thursday, 22 October
Light rain. High 57°, low 43°.
Pressure30.00 inHg
Wind6.2 mph W
Humidity54%
Visibility—
Dew point38°
Fri, 2356° / 38°0
56 °
Shannon, Friday, 23 October
Clear. High 56°, low 38°.
Pressure30.30 inHg
Wind6.6 mph NE
Humidity66%
Visibility—
Dew point39°
Sat, 2463° / 36°0
63 °
Shannon, Saturday, 24 October
Clear. High 63°, low 36°.
Pressure30.18 inHg
Wind5.7 mph E
Humidity52%
Visibility—
Dew point33°
Sun, 2555° / 42°0.09
55 °
Shannon, Sunday, 25 October
Light rain. High 55°, low 42°.
Pressure30.06 inHg
Wind5.7 mph SE
Humidity86%
Visibility—
Dew point43°
Mon, 2655° / 41°0
55 °
Shannon, Monday, 26 October
Overcast. High 55°, low 41°.
Pressure29.91 inHg
Wind4.5 mph NE
Humidity71%
Visibility—
Dew point41°
Tue, 2749° / 41°0.19
49 °
Shannon, Tuesday, 27 October
Light rain. High 49°, low 41°.
Pressure29.77 inHg
Wind3.2 mph SW
Humidity93%
Visibility—
Dew point45°
Wed, 2848° / 44°0.17
48 °
Shannon, Wednesday, 28 October
Light rain. High 48°, low 44°.
Pressure29.97 inHg
Wind2.1 mph E
Humidity97%
Visibility—
Dew point46°
Thu, 2959° / 44°0
59 °
Shannon, Thursday, 29 October
Light rain. High 59°, low 44°.
Pressure30.12 inHg
Wind3.2 mph W
Humidity75%
Visibility—
Dew point44°
Fri, 3063° / 42°0
63 °
Shannon, Friday, 30 October
Mostly clear. High 63°, low 42°.
Pressure30.18 inHg
Wind5.9 mph NW
Humidity65%
Visibility—
Dew point43°
Sat, 3151° / 44°0.2
51 °
Shannon, Saturday, 31 October
Light rain. High 51°, low 44°.
Pressure30.18 inHg
Wind6 mph SW
Humidity97%
Visibility—
Dew point47°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 0159° / 47°0.3
59 °
Shannon, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high59°
Average low47°
Average precipitation0.3 in
Chance of precipitation45%
Record high73° (1962)
Record low33° (2003)
Mon, 0259° / 46°0.26
59 °
Shannon, Monday, 2 November
Climate normal for this date — 60-year average.
Average high59°
Average low46°
Average precipitation0.26 in
Chance of precipitation42%
Record high70° (1976)
Record low37° (2002)
Tue, 0359° / 47°0.22
59 °
Shannon, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high59°
Average low47°
Average precipitation0.22 in
Chance of precipitation45%
Record high72° (1976)
Record low34° (1973)
Wed, 0458° / 47°0.37
58 °
Shannon, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high58°
Average low47°
Average precipitation0.37 in
Chance of precipitation63%
Record high70° (1976)
Record low37° (2011)
Thu, 0557° / 46°0.37
57 °
Shannon, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high57°
Average low46°
Average precipitation0.37 in
Chance of precipitation62%
Record high67° (1987)
Record low34° (1971)
Fri, 0657° / 47°0.31
57 °
Shannon, Friday, 6 November
Climate normal for this date — 60-year average.
Average high57°
Average low47°
Average precipitation0.31 in
Chance of precipitation67%
Record high67° (1999)
Record low36° (1971)
Sat, 0756° / 46°0.33
56 °
Shannon, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high56°
Average low46°
Average precipitation0.33 in
Chance of precipitation58%
Record high67° (1991)
Record low37° (2022)
Sun, 0855° / 44°0.3
55 °
Shannon, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high55°
Average low44°
Average precipitation0.3 in
Chance of precipitation48%
Record high69° (1976)
Record low34° (2020)
Mon, 0955° / 45°0.3
55 °
Shannon, Monday, 9 November
Climate normal for this date — 60-year average.
Average high55°
Average low45°
Average precipitation0.3 in
Chance of precipitation52%
Record high68° (2025)
Record low29° (2022)
Tue, 1056° / 44°0.3
56 °
Shannon, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high56°
Average low44°
Average precipitation0.3 in
Chance of precipitation48%
Record high66° (1996)
Record low31° (1985)
Wed, 1156° / 45°0.34
56 °
Shannon, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high56°
Average low45°
Average precipitation0.34 in
Chance of precipitation58%
Record high66° (2019)
Record low30° (1985)
Thu, 1256° / 45°0.27
56 °
Shannon, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high56°
Average low45°
Average precipitation0.27 in
Chance of precipitation57%
Record high69° (1967)
Record low29° (1985)
Fri, 1356° / 45°0.39
56 °
Shannon, Friday, 13 November
Climate normal for this date — 60-year average.
Average high56°
Average low45°
Average precipitation0.39 in
Chance of precipitation60%
Record high67° (2021)
Record low29° (1978)
Sat, 1456° / 44°0.23
56 °
Shannon, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high56°
Average low44°
Average precipitation0.23 in
Chance of precipitation48%
Record high69° (1999)
Record low29° (1978)
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 Shannon, 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 Shannon, 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.