Monthly outlook for Tiernan, OR: average high 60.5°, average low 43.2°. That is 1° above the climate normal for October. Precipitation is expected on 7 days (about 3.1 inches), against a normal of 8 days and 4.2 inches. The warmest day looks like 3 November (73.6°), the coolest 24 October (29.9°).
60.5°/43.2°
Average high / low
+1°
Above normal
7 / 8
Wet days / normal
3.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
23 October – 1 November
56°
59.6°
-2°
2 November – 11 November
68.1°
56.8°
+6.3°
12 November – 21 November
at normal
54.2°
—
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 (4 mi).
Sat, 2457° / 30°0
57 °
Tiernan, Saturday, 24 October
Overcast. High 57°, low 30°.
Pressure30.15 inHg
Wind1.8 mph NE
Humidity51%
Visibility6.2 mi
Dew point39°
Sun, 2552° / 35°0.93
52 °
Tiernan, Sunday, 25 October
Rain. High 52°, low 35°.
Pressure29.97 inHg
Wind11.4 mph SW
Humidity97%
Visibility1.5 mi
Dew point51°
Mon, 2652° / 48°0.63
52 °
Tiernan, Monday, 26 October
Rain. High 52°, low 48°.
Pressure30.09 inHg
Wind11.9 mph SW
Humidity97%
Visibility2.4 mi
Dew point51°
Tue, 2751° / 48°0.6
51 °
Tiernan, Tuesday, 27 October
Rain. High 51°, low 48°.
Pressure30.09 inHg
Wind5.8 mph SW
Humidity99%
Visibility2.0 mi
Dew point49°
Wed, 2852° / 44°0.22
52 °
Tiernan, Wednesday, 28 October
Rain. High 52°, low 44°.
Pressure30.06 inHg
Wind10.1 mph SW
Humidity93%
Visibility—
Dew point47°
Thu, 2953° / 40°0.22
53 °
Tiernan, Thursday, 29 October
Light rain. High 53°, low 40°.
Pressure29.94 inHg
Wind9.3 mph SW
Humidity94%
Visibility—
Dew point46°
Fri, 3059° / 38°0
59 °
Tiernan, Friday, 30 October
Overcast. High 59°, low 38°.
Pressure30.09 inHg
Wind4.6 mph E
Humidity59%
Visibility—
Dew point36°
Sat, 3162° / 35°0
62 °
Tiernan, Saturday, 31 October
Partly cloudy. High 62°, low 35°.
Pressure30.18 inHg
Wind5.5 mph E
Humidity50%
Visibility—
Dew point32°
Sun, 0165° / 36°0
65 °
Tiernan, Sunday, 1 November
Clear. High 65°, low 36°.
Pressure30.27 inHg
Wind6.4 mph E
Humidity41%
Visibility—
Dew point29°
Mon, 0270° / 40°0
70 °
Tiernan, Monday, 2 November
Clear. High 70°, low 40°.
Pressure30.15 inHg
Wind7.1 mph E
Humidity37%
Visibility—
Dew point29°
Tue, 0374° / 45°0
74 °
Tiernan, Tuesday, 3 November
Clear. High 74°, low 45°.
Pressure30.06 inHg
Wind6 mph E
Humidity36%
Visibility—
Dew point33°
Wed, 0462° / 50°0.3
62 °
Tiernan, Wednesday, 4 November
Rain. High 62°, low 50°.
Pressure29.83 inHg
Wind7.8 mph SW
Humidity38%
Visibility—
Dew point35°
Thu, 0559° / 56°0.18
59 °
Tiernan, Thursday, 5 November
Light rain. High 59°, low 56°.
Pressure29.94 inHg
Wind15.1 mph S
Humidity89%
Visibility—
Dew point55°
Fri, 0670° / 53°0
70 °
Tiernan, Friday, 6 November
Overcast. High 70°, low 53°.
Pressure30.15 inHg
Wind5.1 mph E
Humidity75%
Visibility—
Dew point54°
Sat, 0773° / 54°0
73 °
Tiernan, Saturday, 7 November
Clear. High 73°, low 54°.
Pressure30.15 inHg
Wind5.8 mph E
Humidity61%
Visibility—
Dew point52°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 0855° / 44°0.3
55 °
Tiernan, 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 °
Tiernan, 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 °
Tiernan, 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 °
Tiernan, 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 °
Tiernan, 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 °
Tiernan, 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 °
Tiernan, 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)
Sun, 1555° / 45°0.35
55 °
Tiernan, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high55°
Average low45°
Average precipitation0.35 in
Chance of precipitation53%
Record high64° (2025)
Record low32° (1978)
Mon, 1654° / 45°0.28
54 °
Tiernan, Monday, 16 November
Climate normal for this date — 60-year average.
Average high54°
Average low45°
Average precipitation0.28 in
Chance of precipitation60%
Record high66° (2008)
Record low34° (2014)
Tue, 1754° / 44°0.37
54 °
Tiernan, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high54°
Average low44°
Average precipitation0.37 in
Chance of precipitation65%
Record high65° (2008)
Record low33° (2022)
Wed, 1853° / 43°0.28
53 °
Tiernan, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high53°
Average low43°
Average precipitation0.28 in
Chance of precipitation57%
Record high62° (1989)
Record low31° (1994)
Thu, 1954° / 43°0.45
54 °
Tiernan, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high54°
Average low43°
Average precipitation0.45 in
Chance of precipitation67%
Record high66° (1987)
Record low29° (1977)
Fri, 2053° / 43°0.34
53 °
Tiernan, Friday, 20 November
Climate normal for this date — 60-year average.
Average high53°
Average low43°
Average precipitation0.34 in
Chance of precipitation58%
Record high67° (2002)
Record low28° (1977)
Sat, 2152° / 42°0.35
52 °
Tiernan, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high52°
Average low42°
Average precipitation0.35 in
Chance of precipitation58%
Record high64° (2017)
Record low31° (1985)
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 Tiernan, 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 Tiernan, 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.