Monthly outlook for Tiernan, OR: average high 54.9°, average low 42.2°. That is 1.7° below the climate normal for October. Precipitation is expected on 10 days (about 4.4 inches), against a normal of 8 days and 4.4 inches. The warmest day looks like 3 November (60.7°), the coolest 1 November (36.5°).
54.9°/42.2°
Average high / low
−1.7°
Below normal
10 / 8
Wet days / normal
4.4 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
25 October – 3 November
54.8°
59.1°
-2.4°
4 November – 13 November
55.2°
56.2°
-0.5°
14 November – 23 November
at normal
53.5°
—
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).
Mon, 2653° / 43°0.72
53 °
Tiernan, Monday, 26 October
Rain. High 53°, low 43°.
Pressure30.06 inHg
Wind13 mph SW
Humidity99%
Visibility1.4 mi
Dew point50°
Tue, 2756° / 44°0.22
56 °
Tiernan, Tuesday, 27 October
Rain. High 56°, low 44°.
Pressure30.15 inHg
Wind6.8 mph NW
Humidity85%
Visibility6.2 mi
Dew point48°
Wed, 2854° / 45°0.43
54 °
Tiernan, Wednesday, 28 October
Rain. High 54°, low 45°.
Pressure30.09 inHg
Wind7 mph SW
Humidity89%
Visibility6.2 mi
Dew point49°
Thu, 2951° / 41°0.11
51 °
Tiernan, Thursday, 29 October
Light rain. High 51°, low 41°.
Pressure30.00 inHg
Wind5.7 mph SW
Humidity91%
Visibility5.5 mi
Dew point47°
Fri, 3053° / 37°0.04
53 °
Tiernan, Friday, 30 October
Light rain. High 53°, low 37°.
Pressure29.97 inHg
Wind4.7 mph SW
Humidity83%
Visibility—
Dew point42°
Sat, 3155° / 37°0.02
55 °
Tiernan, Saturday, 31 October
Light rain. High 55°, low 37°.
Pressure29.97 inHg
Wind3.2 mph W
Humidity61%
Visibility—
Dew point37°
Sun, 0156° / 36°0
56 °
Tiernan, Sunday, 1 November
Mostly clear. High 56°, low 36°.
Pressure29.97 inHg
Wind6.4 mph NW
Humidity60%
Visibility—
Dew point36°
Mon, 0255° / 37°0
55 °
Tiernan, Monday, 2 November
Overcast. High 55°, low 37°.
Pressure30.06 inHg
Wind5.6 mph E
Humidity64%
Visibility—
Dew point36°
Tue, 0361° / 41°0
61 °
Tiernan, Tuesday, 3 November
Overcast. High 61°, low 41°.
Pressure29.97 inHg
Wind4.7 mph E
Humidity48%
Visibility—
Dew point33°
Wed, 0457° / 47°0.57
57 °
Tiernan, Wednesday, 4 November
Rain. High 57°, low 47°.
Pressure29.53 inHg
Wind9.2 mph SE
Humidity47%
Visibility—
Dew point36°
Thu, 0555° / 46°0.51
55 °
Tiernan, Thursday, 5 November
Rain. High 55°, low 46°.
Pressure29.59 inHg
Wind14.8 mph S
Humidity76%
Visibility—
Dew point46°
Fri, 0652° / 46°0.68
52 °
Tiernan, Friday, 6 November
Rain. High 52°, low 46°.
Pressure29.94 inHg
Wind10.4 mph SW
Humidity96%
Visibility—
Dew point49°
Sat, 0756° / 47°0.17
56 °
Tiernan, Saturday, 7 November
Light rain. High 56°, low 47°.
Pressure30.21 inHg
Wind6.1 mph S
Humidity90%
Visibility—
Dew point49°
Sun, 0855° / 46°0.06
55 °
Tiernan, Sunday, 8 November
Light rain. High 55°, low 46°.
Pressure30.24 inHg
Wind4.5 mph E
Humidity93%
Visibility—
Dew point49°
Mon, 0957° / 41°0
57 °
Tiernan, Monday, 9 November
Overcast. High 57°, low 41°.
Pressure30.18 inHg
Wind5.6 mph E
Humidity70%
Visibility—
Dew point40°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Sun, 2252° / 42°0.4
52 °
Tiernan, Sunday, 22 November
Climate normal for this date — 60-year average.
Average high52°
Average low42°
Average precipitation0.4 in
Chance of precipitation60%
Record high65° (2017)
Record low31° (1985)
Mon, 2352° / 42°0.35
52 °
Tiernan, Monday, 23 November
Climate normal for this date — 60-year average.
Average high52°
Average low42°
Average precipitation0.35 in
Chance of precipitation63%
Record high62° (1976)
Record low28° (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.