Monthly outlook for Delphi, WA: average high 61.7°, average low 41.3°. That is 0.5° above the climate normal for October. Precipitation is expected on 2 days (about 0.2 inches), against a normal of 6 days and 2.4 inches. The warmest day looks like 8 October (71.6°), the coolest 15 October (35.2°).
61.7°/41.3°
Average high / low
+0.5°
Above normal
2 / 6
Wet days / normal
0.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
7 October – 16 October
59.2°
61.7°
-1.4°
17 October – 26 October
65.9°
58.2°
+4.3°
27 October – 5 November
at normal
54.5°
—
October records over 66 years
87.4°1 October 1987All-time high
29.5°28 October 2023All-time low
Climate normals and records are computed from the nearest reference point — Olympia (7 mi).
Thu, 0872° / 49°0
72 °
Delphi, Thursday, 8 October
Overcast. High 72°, low 49°.
Pressure30.06 inHg
Wind2.1 mph N
Humidity52%
Visibility6.2 mi
Dew point48°
Fri, 0956° / 44°0.13
56 °
Delphi, Friday, 9 October
Rain. High 56°, low 44°.
Pressure29.77 inHg
Wind15.5 mph W
Humidity64%
Visibility6.2 mi
Dew point45°
Sat, 1054° / 41°0
54 °
Delphi, Saturday, 10 October
Partly cloudy. High 54°, low 41°.
Pressure29.83 inHg
Wind4.9 mph NE
Humidity67%
Visibility6.2 mi
Dew point42°
Sun, 1158° / 41°0
58 °
Delphi, Sunday, 11 October
Clear. High 58°, low 41°.
Pressure30.06 inHg
Wind12 mph NE
Humidity48%
Visibility—
Dew point33°
Mon, 1260° / 40°0
60 °
Delphi, Monday, 12 October
Clear. High 60°, low 40°.
Pressure30.09 inHg
Wind6.8 mph NE
Humidity59%
Visibility—
Dew point37°
Tue, 1352° / 43°0.04
52 °
Delphi, Tuesday, 13 October
Light rain. High 52°, low 43°.
Pressure29.91 inHg
Wind11.5 mph W
Humidity87%
Visibility—
Dew point41°
Wed, 1458° / 39°0
58 °
Delphi, Wednesday, 14 October
Mostly clear. High 58°, low 39°.
Pressure30.18 inHg
Wind9.2 mph W
Humidity62%
Visibility—
Dew point38°
Thu, 1558° / 35°0
58 °
Delphi, Thursday, 15 October
Partly cloudy. High 58°, low 35°.
Pressure30.39 inHg
Wind5.6 mph NE
Humidity62%
Visibility—
Dew point35°
Fri, 1656° / 36°0
56 °
Delphi, Friday, 16 October
Overcast. High 56°, low 36°.
Pressure30.33 inHg
Wind6.8 mph NE
Humidity57%
Visibility—
Dew point33°
Sat, 1761° / 36°0
61 °
Delphi, Saturday, 17 October
Clear. High 61°, low 36°.
Pressure30.27 inHg
Wind5.5 mph NE
Humidity54%
Visibility—
Dew point33°
Sun, 1865° / 38°0
65 °
Delphi, Sunday, 18 October
Clear. High 65°, low 38°.
Pressure30.06 inHg
Wind4.5 mph NE
Humidity45%
Visibility—
Dew point32°
Mon, 1967° / 40°0
67 °
Delphi, Monday, 19 October
Clear. High 67°, low 40°.
Pressure30.06 inHg
Wind4.6 mph NE
Humidity49%
Visibility—
Dew point36°
Tue, 2068° / 42°0
68 °
Delphi, Tuesday, 20 October
Overcast. High 68°, low 42°.
Pressure30.15 inHg
Wind5.2 mph NE
Humidity53%
Visibility—
Dew point38°
Wed, 2168° / 42°0
68 °
Delphi, Wednesday, 21 October
Overcast. High 68°, low 42°.
Pressure30.12 inHg
Wind4 mph NE
Humidity49%
Visibility—
Dew point37°
Thu, 2266° / 42°0
66 °
Delphi, Thursday, 22 October
Clear. High 66°, low 42°.
Pressure30.00 inHg
Wind4.3 mph NE
Humidity53%
Visibility—
Dew point38°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 2358° / 46°0.14
58 °
Delphi, Friday, 23 October
Climate normal for this date — 60-year average.
Average high58°
Average low46°
Average precipitation0.14 in
Chance of precipitation43%
Record high72° (1992)
Record low39° (2024)
Sat, 2457° / 45°0.2
57 °
Delphi, Saturday, 24 October
Climate normal for this date — 60-year average.
Average high57°
Average low45°
Average precipitation0.2 in
Chance of precipitation47%
Record high71° (1965)
Record low37° (1983)
Sun, 2556° / 46°0.22
56 °
Delphi, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high56°
Average low46°
Average precipitation0.22 in
Chance of precipitation53%
Record high68° (1965)
Record low37° (2012)
Mon, 2656° / 45°0.23
56 °
Delphi, Monday, 26 October
Climate normal for this date — 60-year average.
Average high56°
Average low45°
Average precipitation0.23 in
Chance of precipitation52%
Record high69° (1965)
Record low34° (1970)
Tue, 2756° / 44°0.21
56 °
Delphi, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high56°
Average low44°
Average precipitation0.21 in
Chance of precipitation40%
Record high67° (1968)
Record low30° (2023)
Wed, 2855° / 44°0.24
55 °
Delphi, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high55°
Average low44°
Average precipitation0.24 in
Chance of precipitation53%
Record high69° (1962)
Record low29° (2023)
Thu, 2955° / 44°0.17
55 °
Delphi, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high55°
Average low44°
Average precipitation0.17 in
Chance of precipitation48%
Record high69° (1962)
Record low31° (1971)
Fri, 3055° / 44°0.21
55 °
Delphi, Friday, 30 October
Climate normal for this date — 60-year average.
Average high55°
Average low44°
Average precipitation0.21 in
Chance of precipitation55%
Record high64° (1987)
Record low29° (2019)
Sat, 3154° / 44°0.3
54 °
Delphi, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high54°
Average low44°
Average precipitation0.3 in
Chance of precipitation52%
Record high65° (1964)
Record low31° (2002)
Sun, 0155° / 43°0.23
55 °
Delphi, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high55°
Average low43°
Average precipitation0.23 in
Chance of precipitation50%
Record high66° (1981)
Record low32° (2002)
Mon, 0254° / 43°0.22
54 °
Delphi, Monday, 2 November
Climate normal for this date — 60-year average.
Average high54°
Average low43°
Average precipitation0.22 in
Chance of precipitation55%
Record high66° (1962)
Record low34° (2002)
Tue, 0354° / 44°0.25
54 °
Delphi, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high54°
Average low44°
Average precipitation0.25 in
Chance of precipitation60%
Record high64° (2010)
Record low32° (1973)
Wed, 0454° / 44°0.31
54 °
Delphi, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high54°
Average low44°
Average precipitation0.31 in
Chance of precipitation60%
Record high67° (1980)
Record low32° (2003)
Thu, 0553° / 43°0.2
53 °
Delphi, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high53°
Average low43°
Average precipitation0.2 in
Chance of precipitation63%
Record high65° (1980)
Record low27° (1973)
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 Delphi, 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 Delphi, 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.