Monthly outlook for Sampson, WA: average high 56.6°, average low 49.6°. That is 0.8° below the climate normal for October. Precipitation is expected on 4 days (about 3.0 inches), against a normal of 7 days and 3.8 inches. The warmest day looks like 15 October (66.7°), the coolest 12 October (36.6°).
56.6°/49.6°
Average high / low
−0.8°
Below normal
4 / 7
Wet days / normal
3.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
11 October – 20 October
57.1°
59.2°
-1.2°
21 October – 30 October
55.9°
55.7°
+0.1°
31 October – 9 November
at normal
53.2°
—
October records over 66 years
81.7°6 October 1987All-time high
30.7°28 October 1971All-time low
Climate normals and records are computed from the nearest reference point — Markham (12 mi).
Mon, 1256° / 37°0
56 °
Sampson, Monday, 12 October
Partly cloudy. High 56°, low 37°.
Pressure30.06 inHg
Wind2.1 mph SW
Humidity73%
Visibility0.7 mi
Dew point44°
Tue, 1355° / 42°0
55 °
Sampson, Tuesday, 13 October
Overcast. High 55°, low 42°.
Pressure30.21 inHg
Wind7.2 mph S
Humidity92%
Visibility1.7 mi
Dew point51°
Wed, 1457° / 55°0.02
57 °
Sampson, Wednesday, 14 October
Light rain. High 57°, low 55°.
Pressure30.30 inHg
Wind6.7 mph S
Humidity93%
Visibility3.0 mi
Dew point54°
Thu, 1567° / 51°0
67 °
Sampson, Thursday, 15 October
Clear. High 67°, low 51°.
Pressure30.27 inHg
Wind6.7 mph E
Humidity73%
Visibility6.2 mi
Dew point53°
Fri, 1660° / 55°0
60 °
Sampson, Friday, 16 October
Light rain. High 60°, low 55°.
Pressure30.15 inHg
Wind14 mph E
Humidity92%
Visibility—
Dew point56°
Sat, 1756° / 54°0.14
56 °
Sampson, Saturday, 17 October
Rain. High 56°, low 54°.
Pressure30.18 inHg
Wind9.9 mph NW
Humidity96%
Visibility—
Dew point54°
Sun, 1854° / 54°0
54 °
Sampson, Sunday, 18 October
Partly cloudy. High 54°, low 54°.
Pressure30.15 inHg
Wind9.1 mph S
Humidity91%
Visibility—
Dew point51°
Mon, 1953° / 52°1.07
53 °
Sampson, Monday, 19 October
Rain. High 53°, low 52°.
Pressure29.83 inHg
Wind21.9 mph SE
Humidity92%
Visibility—
Dew point50°
Tue, 2055° / 53°0.61
55 °
Sampson, Tuesday, 20 October
Rain. High 55°, low 53°.
Pressure29.91 inHg
Wind29.1 mph SW
Humidity85%
Visibility—
Dew point50°
Wed, 2153° / 51°1.19
53 °
Sampson, Wednesday, 21 October
Rain. High 53°, low 51°.
Pressure29.74 inHg
Wind26.1 mph S
Humidity91%
Visibility—
Dew point50°
Thu, 2254° / 50°0
54 °
Sampson, Thursday, 22 October
Partly cloudy. High 54°, low 50°.
Pressure30.33 inHg
Wind9.3 mph NE
Humidity80%
Visibility—
Dew point47°
Fri, 2358° / 48°0
58 °
Sampson, Friday, 23 October
Mostly clear. High 58°, low 48°.
Pressure30.47 inHg
Wind15.6 mph E
Humidity65%
Visibility—
Dew point44°
Sat, 2459° / 50°0
59 °
Sampson, Saturday, 24 October
Mostly clear. High 59°, low 50°.
Pressure30.33 inHg
Wind17 mph E
Humidity61%
Visibility—
Dew point44°
Sun, 2558° / 51°0
58 °
Sampson, Sunday, 25 October
Overcast. High 58°, low 51°.
Pressure30.27 inHg
Wind13.5 mph E
Humidity61%
Visibility—
Dew point44°
Mon, 2654° / 51°0
54 °
Sampson, Monday, 26 October
Overcast. High 54°, low 51°.
Pressure30.18 inHg
Wind6.5 mph E
Humidity67%
Visibility—
Dew point43°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2755° / 45°0.29
55 °
Sampson, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high55°
Average low45°
Average precipitation0.29 in
Chance of precipitation48%
Record high67° (2017)
Record low34° (1971)
Wed, 2854° / 45°0.36
54 °
Sampson, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high54°
Average low45°
Average precipitation0.36 in
Chance of precipitation65%
Record high69° (1962)
Record low31° (1971)
Thu, 2954° / 44°0.23
54 °
Sampson, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high54°
Average low44°
Average precipitation0.23 in
Chance of precipitation52%
Record high65° (1962)
Record low33° (1971)
Fri, 3054° / 45°0.3
54 °
Sampson, Friday, 30 October
Climate normal for this date — 60-year average.
Average high54°
Average low45°
Average precipitation0.3 in
Chance of precipitation60%
Record high61° (2017)
Record low33° (1991)
Sat, 3154° / 44°0.31
54 °
Sampson, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high54°
Average low44°
Average precipitation0.31 in
Chance of precipitation53%
Record high64° (1966)
Record low33° (2019)
Sun, 0155° / 45°0.3
55 °
Sampson, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high55°
Average low45°
Average precipitation0.3 in
Chance of precipitation48%
Record high66° (1969)
Record low33° (2003)
Mon, 0254° / 44°0.31
54 °
Sampson, Monday, 2 November
Climate normal for this date — 60-year average.
Average high54°
Average low44°
Average precipitation0.31 in
Chance of precipitation60%
Record high65° (1962)
Record low34° (1973)
Tue, 0354° / 45°0.33
54 °
Sampson, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high54°
Average low45°
Average precipitation0.33 in
Chance of precipitation62%
Record high65° (2010)
Record low31° (2003)
Wed, 0454° / 45°0.41
54 °
Sampson, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high54°
Average low45°
Average precipitation0.41 in
Chance of precipitation65%
Record high63° (1980)
Record low33° (1973)
Thu, 0553° / 44°0.31
53 °
Sampson, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high53°
Average low44°
Average precipitation0.31 in
Chance of precipitation70%
Record high64° (1987)
Record low30° (1973)
Fri, 0653° / 44°0.4
53 °
Sampson, Friday, 6 November
Climate normal for this date — 60-year average.
Average high53°
Average low44°
Average precipitation0.4 in
Chance of precipitation70%
Record high61° (1976)
Record low34° (2017)
Sat, 0753° / 45°0.34
53 °
Sampson, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high53°
Average low45°
Average precipitation0.34 in
Chance of precipitation70%
Record high61° (2024)
Record low35° (1973)
Sun, 0852° / 43°0.25
52 °
Sampson, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high52°
Average low43°
Average precipitation0.25 in
Chance of precipitation58%
Record high65° (2016)
Record low34° (1977)
Mon, 0952° / 43°0.34
52 °
Sampson, Monday, 9 November
Climate normal for this date — 60-year average.
Average high52°
Average low43°
Average precipitation0.34 in
Chance of precipitation67%
Record high64° (2025)
Record low32° (1982)
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 Sampson, 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 Sampson, 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.