Monthly outlook for Sifton, WA: average high 64.7°, average low 44.9°. That is 4.4° above the climate normal for October. Precipitation is expected on 4 days (about 1.7 inches), against a normal of 9 days and 5.0 inches. The warmest day looks like 20 October (74.3°), the coolest 24 October (37.4°).
64.7°/44.9°
Average high / low
+4.4°
Above normal
4 / 9
Wet days / normal
1.7 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
20 October – 29 October
67°
57.8°
+5.1°
30 October – 8 November
60.8°
54°
+3.7°
9 November – 18 November
at normal
51°
—
October records over 66 years
88.9°1 October 1987All-time high
26.6°29 October 1971All-time low
Climate normals and records are computed from the nearest reference point — Mill Plain (3 mi).
Wed, 2173° / 45°0
73 °
Sifton, Wednesday, 21 October
Overcast. High 73°, low 45°.
Pressure29.91 inHg
Wind4.7 mph W
Humidity57%
Visibility6.2 mi
Dew point46°
Thu, 2261° / 45°0
61 °
Sifton, Thursday, 22 October
Overcast. High 61°, low 45°.
Pressure30.06 inHg
Wind7.8 mph NW
Humidity66%
Visibility6.2 mi
Dew point46°
Fri, 2358° / 38°0
58 °
Sifton, Friday, 23 October
Overcast. High 58°, low 38°.
Pressure30.36 inHg
Wind2.2 mph NW
Humidity69%
Visibility6.2 mi
Dew point40°
Sat, 2463° / 37°0
63 °
Sifton, Saturday, 24 October
Overcast. High 63°, low 37°.
Pressure30.18 inHg
Wind5.6 mph NW
Humidity64%
Visibility—
Dew point39°
Sun, 2569° / 43°0
69 °
Sifton, Sunday, 25 October
Overcast. High 69°, low 43°.
Pressure30.12 inHg
Wind6.4 mph W
Humidity53%
Visibility—
Dew point39°
Mon, 2668° / 44°0
68 °
Sifton, Monday, 26 October
Mostly clear. High 68°, low 44°.
Pressure30.21 inHg
Wind6.9 mph NE
Humidity18%
Visibility—
Dew point16°
Tue, 2769° / 43°0
69 °
Sifton, Tuesday, 27 October
Overcast. High 69°, low 43°.
Pressure30.15 inHg
Wind4.5 mph NE
Humidity24%
Visibility—
Dew point21°
Wed, 2868° / 43°0
68 °
Sifton, Wednesday, 28 October
Overcast. High 68°, low 43°.
Pressure30.03 inHg
Wind3.6 mph NE
Humidity25%
Visibility—
Dew point22°
Thu, 2967° / 47°0
67 °
Sifton, Thursday, 29 October
Overcast. High 67°, low 47°.
Pressure29.91 inHg
Wind3.8 mph NE
Humidity26%
Visibility—
Dew point23°
Fri, 3065° / 45°0
65 °
Sifton, Friday, 30 October
Overcast. High 65°, low 45°.
Pressure30.03 inHg
Wind3.5 mph NW
Humidity29%
Visibility—
Dew point24°
Sat, 3170° / 46°0.01
70 °
Sifton, Saturday, 31 October
Light rain. High 70°, low 46°.
Pressure29.91 inHg
Wind4.9 mph NE
Humidity31%
Visibility—
Dew point29°
Sun, 0160° / 52°0.12
60 °
Sifton, Sunday, 1 November
Light rain. High 60°, low 52°.
Pressure29.68 inHg
Wind3.6 mph E
Humidity41%
Visibility—
Dew point36°
Mon, 0257° / 50°0.65
57 °
Sifton, Monday, 2 November
Rain. High 57°, low 50°.
Pressure29.77 inHg
Wind12.8 mph S
Humidity95%
Visibility—
Dew point50°
Tue, 0358° / 48°0.87
58 °
Sifton, Tuesday, 3 November
Rain. High 58°, low 48°.
Pressure30.09 inHg
Wind8.6 mph S
Humidity94%
Visibility—
Dew point52°
Wed, 0455° / 47°0.07
55 °
Sifton, Wednesday, 4 November
Light rain. High 55°, low 47°.
Pressure30.12 inHg
Wind9.2 mph S
Humidity80%
Visibility—
Dew point46°
From day 17 onward the outlook is built from 60-year climate statistics
Thu, 0554° / 42°0.35
54 °
Sifton, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high54°
Average low42°
Average precipitation0.35 in
Chance of precipitation73%
Record high66° (1987)
Record low26° (1971)
Fri, 0653° / 42°0.48
53 °
Sifton, Friday, 6 November
Climate normal for this date — 60-year average.
Average high53°
Average low42°
Average precipitation0.48 in
Chance of precipitation68%
Record high63° (1999)
Record low30° (1971)
Sat, 0753° / 42°0.42
53 °
Sifton, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high53°
Average low42°
Average precipitation0.42 in
Chance of precipitation63%
Record high65° (2016)
Record low32° (2001)
Sun, 0852° / 40°0.3
52 °
Sifton, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high52°
Average low40°
Average precipitation0.3 in
Chance of precipitation55%
Record high67° (1976)
Record low28° (2020)
Mon, 0951° / 40°0.28
51 °
Sifton, Monday, 9 November
Climate normal for this date — 60-year average.
Average high51°
Average low40°
Average precipitation0.28 in
Chance of precipitation62%
Record high64° (1996)
Record low27° (2022)
Tue, 1052° / 40°0.26
52 °
Sifton, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high52°
Average low40°
Average precipitation0.26 in
Chance of precipitation57%
Record high65° (2016)
Record low28° (1978)
Wed, 1152° / 41°0.37
52 °
Sifton, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high52°
Average low41°
Average precipitation0.37 in
Chance of precipitation60%
Record high63° (2016)
Record low26° (1978)
Thu, 1252° / 41°0.38
52 °
Sifton, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high52°
Average low41°
Average precipitation0.38 in
Chance of precipitation65%
Record high62° (1974)
Record low23° (1985)
Fri, 1352° / 40°0.39
52 °
Sifton, Friday, 13 November
Climate normal for this date — 60-year average.
Average high52°
Average low40°
Average precipitation0.39 in
Chance of precipitation63%
Record high64° (1999)
Record low24° (1978)
Sat, 1451° / 40°0.31
51 °
Sifton, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high51°
Average low40°
Average precipitation0.31 in
Chance of precipitation60%
Record high66° (1999)
Record low24° (1985)
Sun, 1551° / 39°0.33
51 °
Sifton, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high51°
Average low39°
Average precipitation0.33 in
Chance of precipitation65%
Record high62° (2008)
Record low19° (2014)
Mon, 1650° / 40°0.32
50 °
Sifton, Monday, 16 November
Climate normal for this date — 60-year average.
Average high50°
Average low40°
Average precipitation0.32 in
Chance of precipitation72%
Record high63° (1976)
Record low20° (2014)
Tue, 1750° / 39°0.39
50 °
Sifton, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high50°
Average low39°
Average precipitation0.39 in
Chance of precipitation73%
Record high62° (1995)
Record low21° (2014)
Wed, 1848° / 38°0.29
48 °
Sifton, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high48°
Average low38°
Average precipitation0.29 in
Chance of precipitation58%
Record high58° (1989)
Record low23° (1975)
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 Sifton, WA 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 Sifton, WA 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.