Monthly outlook for Lewis, OR: average high 60.5°, average low 40.9°. That is 0.9° below the climate normal for October. Precipitation is expected on 1 day (about 0.1 inches), against a normal of 5 days and 1.2 inches. The warmest day looks like 26 October (73.7°), the coolest 12 October (30.9°).
60.5°/40.9°
Average high / low
−0.9°
Below normal
1 / 5
Wet days / normal
0.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
11 October – 20 October
58°
63.4°
-3°
21 October – 30 October
64.5°
58.2°
+3.5°
31 October – 9 November
at normal
52.9°
—
October records over 66 years
93°1 October 2010All-time high
16.2°28 October 1971All-time low
Climate normals and records are computed from the nearest reference point — Imnaha (16 mi).
Mon, 1242° / 31°0.06
42 °
Lewis, Monday, 12 October
Light snow. High 42°, low 31°.
Pressure30.03 inHg
Wind2.2 mph N
Humidity76%
Visibility6.2 mi
Dew point31°
Tue, 1353° / 33°0
53 °
Lewis, Tuesday, 13 October
Clear. High 53°, low 33°.
Pressure30.09 inHg
Wind3.4 mph N
Humidity50%
Visibility6.2 mi
Dew point29°
Wed, 1459° / 37°0
59 °
Lewis, Wednesday, 14 October
Clear. High 59°, low 37°.
Pressure30.18 inHg
Wind2.2 mph N
Humidity39%
Visibility6.2 mi
Dew point24°
Thu, 1564° / 41°0
64 °
Lewis, Thursday, 15 October
Clear. High 64°, low 41°.
Pressure30.39 inHg
Wind3.3 mph E
Humidity39%
Visibility—
Dew point30°
Fri, 1669° / 47°0
69 °
Lewis, Friday, 16 October
Clear. High 69°, low 47°.
Pressure30.27 inHg
Wind8.4 mph S
Humidity33%
Visibility—
Dew point31°
Sat, 1773° / 49°0
73 °
Lewis, Saturday, 17 October
Partly cloudy. High 73°, low 49°.
Pressure30.12 inHg
Wind4.8 mph S
Humidity22%
Visibility—
Dew point25°
Sun, 1868° / 49°0
68 °
Lewis, Sunday, 18 October
Overcast. High 68°, low 49°.
Pressure30.03 inHg
Wind4.9 mph W
Humidity33%
Visibility—
Dew point32°
Mon, 1958° / 43°0
58 °
Lewis, Monday, 19 October
Mostly clear. High 58°, low 43°.
Pressure30.09 inHg
Wind16.1 mph W
Humidity49%
Visibility—
Dew point35°
Tue, 2054° / 40°0
54 °
Lewis, Tuesday, 20 October
Overcast. High 54°, low 40°.
Pressure30.12 inHg
Wind9.6 mph W
Humidity46%
Visibility—
Dew point28°
Wed, 2160° / 38°0
60 °
Lewis, Wednesday, 21 October
Clear. High 60°, low 38°.
Pressure30.09 inHg
Wind4.8 mph SE
Humidity32%
Visibility—
Dew point23°
Thu, 2263° / 43°0
63 °
Lewis, Thursday, 22 October
Overcast. High 63°, low 43°.
Pressure29.83 inHg
Wind13 mph W
Humidity22%
Visibility—
Dew point20°
Fri, 2359° / 40°0
59 °
Lewis, Friday, 23 October
Clear. High 59°, low 40°.
Pressure30.27 inHg
Wind5.6 mph NE
Humidity40%
Visibility—
Dew point30°
Sat, 2462° / 41°0
62 °
Lewis, Saturday, 24 October
Clear. High 62°, low 41°.
Pressure30.33 inHg
Wind5.7 mph NE
Humidity40%
Visibility—
Dew point31°
Sun, 2569° / 43°0
69 °
Lewis, Sunday, 25 October
Mostly clear. High 69°, low 43°.
Pressure30.27 inHg
Wind4.5 mph NE
Humidity33%
Visibility—
Dew point30°
Mon, 2674° / 47°0
74 °
Lewis, Monday, 26 October
Clear. High 74°, low 47°.
Pressure30.06 inHg
Wind3.4 mph S
Humidity20%
Visibility—
Dew point22°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2757° / 38°0.09
57 °
Lewis, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high57°
Average low38°
Average precipitation0.09 in
Chance of precipitation38%
Record high74° (1987)
Record low19° (1970)
Wed, 2856° / 38°0.09
56 °
Lewis, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high56°
Average low38°
Average precipitation0.09 in
Chance of precipitation43%
Record high75° (1987)
Record low16° (1971)
Thu, 2955° / 38°0.08
55 °
Lewis, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high55°
Average low38°
Average precipitation0.08 in
Chance of precipitation45%
Record high75° (1962)
Record low18° (2019)
Fri, 3055° / 37°0.07
55 °
Lewis, Friday, 30 October
Climate normal for this date — 60-year average.
Average high55°
Average low37°
Average precipitation0.07 in
Chance of precipitation27%
Record high72° (2008)
Record low17° (2019)
Sat, 3154° / 38°0.09
54 °
Lewis, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high54°
Average low38°
Average precipitation0.09 in
Chance of precipitation45%
Record high73° (1988)
Record low21° (2002)
Sun, 0154° / 38°0.09
54 °
Lewis, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high54°
Average low38°
Average precipitation0.09 in
Chance of precipitation45%
Record high72° (1965)
Record low20° (1984)
Mon, 0254° / 37°0.09
54 °
Lewis, Monday, 2 November
Climate normal for this date — 60-year average.
Average high54°
Average low37°
Average precipitation0.09 in
Chance of precipitation42%
Record high69° (1981)
Record low8° (1991)
Tue, 0354° / 36°0.05
54 °
Lewis, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high54°
Average low36°
Average precipitation0.05 in
Chance of precipitation27%
Record high69° (2020)
Record low12° (1991)
Wed, 0454° / 37°0.12
54 °
Lewis, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high54°
Average low37°
Average precipitation0.12 in
Chance of precipitation50%
Record high71° (1980)
Record low21° (1973)
Thu, 0553° / 37°0.1
53 °
Lewis, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high53°
Average low37°
Average precipitation0.1 in
Chance of precipitation45%
Record high71° (1980)
Record low-3° (1971)
Fri, 0653° / 37°0.12
53 °
Lewis, Friday, 6 November
Climate normal for this date — 60-year average.
Average high53°
Average low37°
Average precipitation0.12 in
Chance of precipitation50%
Record high71° (2012)
Record low-2° (1971)
Sat, 0752° / 36°0.13
52 °
Lewis, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high52°
Average low36°
Average precipitation0.13 in
Chance of precipitation45%
Record high70° (1999)
Record low20° (1994)
Sun, 0851° / 35°0.1
51 °
Lewis, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high51°
Average low35°
Average precipitation0.1 in
Chance of precipitation45%
Record high71° (2016)
Record low1° (1994)
Mon, 0951° / 35°0.09
51 °
Lewis, Monday, 9 November
Climate normal for this date — 60-year average.
Average high51°
Average low35°
Average precipitation0.09 in
Chance of precipitation50%
Record high70° (2016)
Record low21° (1986)
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 Lewis, 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 Lewis, 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.