Monthly outlook for Sultan, WA: average high 57.8°, average low 44.7°. That is 0.9° below the climate normal for October. Precipitation is expected on 8 days (about 4.1 inches), against a normal of 8 days and 4.3 inches. The warmest day looks like 8 October (72.1°), the coolest 11 October (38.8°).
57.8°/44.7°
Average high / low
−0.9°
Below normal
8 / 8
Wet days / normal
4.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 October – 17 October
59.9°
60.4°
-0.3°
18 October – 27 October
54.4°
57°
-1.4°
28 October – 6 November
at normal
53°
—
October records over 66 years
88.2°1 October 1987All-time high
16.3°28 October 1971All-time low
Climate normals and records are computed from the nearest reference point — Startup (3 mi).
Fri, 0960° / 48°0.32
60 °
Sultan, Friday, 9 October
Rain. High 60°, low 48°.
Pressure29.80 inHg
Wind8.2 mph NW
Humidity79%
Visibility4.5 mi
Dew point49°
Sat, 1053° / 42°0.15
53 °
Sultan, Saturday, 10 October
Light rain. High 53°, low 42°.
Pressure29.85 inHg
Wind3.3 mph W
Humidity79%
Visibility5.1 mi
Dew point46°
Sun, 1158° / 39°0
58 °
Sultan, Sunday, 11 October
Clear. High 58°, low 39°.
Pressure30.00 inHg
Wind3.8 mph W
Humidity65%
Visibility6.2 mi
Dew point42°
Mon, 1260° / 40°0
60 °
Sultan, Monday, 12 October
Clear. High 60°, low 40°.
Pressure30.06 inHg
Wind4.6 mph E
Humidity46%
Visibility—
Dew point33°
Tue, 1358° / 42°0.84
58 °
Sultan, Tuesday, 13 October
Rain. High 58°, low 42°.
Pressure29.97 inHg
Wind3.6 mph E
Humidity55%
Visibility—
Dew point37°
Wed, 1451° / 44°0.48
51 °
Sultan, Wednesday, 14 October
Rain. High 51°, low 44°.
Pressure29.88 inHg
Wind4.7 mph SW
Humidity96%
Visibility—
Dew point47°
Thu, 1557° / 46°0
57 °
Sultan, Thursday, 15 October
Overcast. High 57°, low 46°.
Pressure30.33 inHg
Wind3.6 mph E
Humidity75%
Visibility—
Dew point44°
Fri, 1666° / 44°0
66 °
Sultan, Friday, 16 October
Overcast. High 66°, low 44°.
Pressure30.33 inHg
Wind4.8 mph E
Humidity48%
Visibility—
Dew point37°
Sat, 1763° / 48°0
63 °
Sultan, Saturday, 17 October
Overcast. High 63°, low 48°.
Pressure30.33 inHg
Wind3.9 mph E
Humidity55%
Visibility—
Dew point42°
Sun, 1863° / 48°0
63 °
Sultan, Sunday, 18 October
Overcast. High 63°, low 48°.
Pressure30.24 inHg
Wind4 mph W
Humidity68%
Visibility—
Dew point45°
Mon, 1961° / 46°0
61 °
Sultan, Monday, 19 October
Partly cloudy. High 61°, low 46°.
Pressure30.24 inHg
Wind4 mph W
Humidity70%
Visibility—
Dew point45°
Tue, 2056° / 48°0.46
56 °
Sultan, Tuesday, 20 October
Rain. High 56°, low 48°.
Pressure30.12 inHg
Wind3.7 mph E
Humidity69%
Visibility—
Dew point45°
Wed, 2151° / 47°0.8
51 °
Sultan, Wednesday, 21 October
Rain. High 51°, low 47°.
Pressure29.83 inHg
Wind4.8 mph SE
Humidity93%
Visibility—
Dew point47°
Thu, 2251° / 44°0.59
51 °
Sultan, Thursday, 22 October
Rain. High 51°, low 44°.
Pressure29.41 inHg
Wind4.8 mph E
Humidity91%
Visibility—
Dew point44°
Fri, 2344° / 42°0.45
44 °
Sultan, Friday, 23 October
Light rain. High 44°, low 42°.
Pressure29.74 inHg
Wind3 mph SE
Humidity96%
Visibility—
Dew point42°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 2457° / 44°0.29
57 °
Sultan, Saturday, 24 October
Climate normal for this date — 60-year average.
Average high57°
Average low44°
Average precipitation0.29 in
Chance of precipitation57%
Record high74° (1965)
Record low36° (2008)
Sun, 2556° / 43°0.34
56 °
Sultan, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high56°
Average low43°
Average precipitation0.34 in
Chance of precipitation62%
Record high72° (1965)
Record low31° (1969)
Mon, 2655° / 43°0.41
55 °
Sultan, Monday, 26 October
Climate normal for this date — 60-year average.
Average high55°
Average low43°
Average precipitation0.41 in
Chance of precipitation58%
Record high73° (1965)
Record low24° (1970)
Tue, 2755° / 42°0.32
55 °
Sultan, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high55°
Average low42°
Average precipitation0.32 in
Chance of precipitation58%
Record high69° (2017)
Record low20° (1971)
Wed, 2854° / 42°0.39
54 °
Sultan, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high54°
Average low42°
Average precipitation0.39 in
Chance of precipitation58%
Record high73° (1962)
Record low16° (1971)
Thu, 2954° / 41°0.26
54 °
Sultan, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high54°
Average low41°
Average precipitation0.26 in
Chance of precipitation60%
Record high73° (1962)
Record low20° (1971)
Fri, 3053° / 41°0.36
53 °
Sultan, Friday, 30 October
Climate normal for this date — 60-year average.
Average high53°
Average low41°
Average precipitation0.36 in
Chance of precipitation55%
Record high63° (1993)
Record low17° (1972)
Sat, 3153° / 42°0.41
53 °
Sultan, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high53°
Average low42°
Average precipitation0.41 in
Chance of precipitation70%
Record high65° (1988)
Record low28° (2006)
Sun, 0153° / 41°0.39
53 °
Sultan, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high53°
Average low41°
Average precipitation0.39 in
Chance of precipitation60%
Record high68° (1981)
Record low29° (1973)
Mon, 0253° / 41°0.29
53 °
Sultan, Monday, 2 November
Climate normal for this date — 60-year average.
Average high53°
Average low41°
Average precipitation0.29 in
Chance of precipitation55%
Record high70° (1962)
Record low22° (1973)
Tue, 0353° / 41°0.39
53 °
Sultan, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high53°
Average low41°
Average precipitation0.39 in
Chance of precipitation60%
Record high67° (2010)
Record low24° (1973)
Wed, 0453° / 42°0.52
53 °
Sultan, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high53°
Average low42°
Average precipitation0.52 in
Chance of precipitation63%
Record high69° (2010)
Record low29° (2003)
Thu, 0552° / 40°0.33
52 °
Sultan, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high52°
Average low40°
Average precipitation0.33 in
Chance of precipitation63%
Record high67° (1997)
Record low15° (1971)
Fri, 0651° / 40°0.44
51 °
Sultan, Friday, 6 November
Climate normal for this date — 60-year average.
Average high51°
Average low40°
Average precipitation0.44 in
Chance of precipitation65%
Record high60° (2012)
Record low27° (2003)
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 Sultan, 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 Sultan, 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.