Monthly outlook for Demster, NY: average high 57.4°, average low 46.8°. That is 0.4° above the climate normal for October. Precipitation is expected on 8 days (about 5.1 inches), against a normal of 8 days and 2.7 inches. The warmest day looks like 13 October (69.3°), the coolest 18 October (32.6°).
57.4°/46.8°
Average high / low
+0.4°
Above normal
8 / 8
Wet days / normal
5.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
11 October – 20 October
59°
57.8°
+0.6°
21 October – 30 October
54.8°
54.1°
+0.4°
31 October – 9 November
at normal
51.1°
—
October records over 66 years
83.7°4 October 2023All-time high
27.5°20 October 1972All-time low
Climate normals and records are computed from the nearest reference point — Richland (10 mi).
Mon, 1263° / 47°0
63 °
Demster, Monday, 12 October
Overcast. High 63°, low 47°.
Pressure29.88 inHg
Wind8.2 mph W
Humidity91%
Visibility2.9 mi
Dew point57°
Tue, 1369° / 53°0.98
69 °
Demster, Tuesday, 13 October
Heavy rain. High 69°, low 53°.
Pressure29.77 inHg
Wind10.2 mph S
Humidity95%
Visibility5.3 mi
Dew point62°
Wed, 1463° / 57°0.01
63 °
Demster, Wednesday, 14 October
Light rain. High 63°, low 57°.
Pressure29.94 inHg
Wind9.8 mph NW
Humidity87%
Visibility6.2 mi
Dew point54°
Thu, 1558° / 52°0.02
58 °
Demster, Thursday, 15 October
Light rain. High 58°, low 52°.
Pressure30.27 inHg
Wind8.3 mph NE
Humidity67%
Visibility6.2 mi
Dew point41°
Fri, 1656° / 51°0.82
56 °
Demster, Friday, 16 October
Rain. High 56°, low 51°.
Pressure29.59 inHg
Wind35.5 mph NW
Humidity91%
Visibility—
Dew point51°
Sat, 1747° / 41°0.06
47 °
Demster, Saturday, 17 October
Light rain. High 47°, low 41°.
Pressure30.27 inHg
Wind32.5 mph NW
Humidity62%
Visibility—
Dew point32°
Sun, 1853° / 33°0
53 °
Demster, Sunday, 18 October
Overcast. High 53°, low 33°.
Pressure30.59 inHg
Wind15.1 mph S
Humidity49%
Visibility—
Dew point24°
Mon, 1961° / 40°0
61 °
Demster, Monday, 19 October
Mostly clear. High 61°, low 40°.
Pressure30.42 inHg
Wind13.1 mph S
Humidity56%
Visibility—
Dew point37°
Tue, 2059° / 47°0
59 °
Demster, Tuesday, 20 October
Clear. High 59°, low 47°.
Pressure30.36 inHg
Wind7.8 mph W
Humidity72%
Visibility—
Dew point47°
Wed, 2165° / 48°0
65 °
Demster, Wednesday, 21 October
Clear. High 65°, low 48°.
Pressure30.36 inHg
Wind10.7 mph SE
Humidity64%
Visibility—
Dew point46°
Thu, 2266° / 52°0
66 °
Demster, Thursday, 22 October
Overcast. High 66°, low 52°.
Pressure30.18 inHg
Wind24.3 mph SE
Humidity64%
Visibility—
Dew point48°
Fri, 2359° / 51°1.63
59 °
Demster, Friday, 23 October
Heavy rain. High 59°, low 51°.
Pressure29.74 inHg
Wind22.7 mph SE
Humidity94%
Visibility—
Dew point52°
Sat, 2450° / 41°0.67
50 °
Demster, Saturday, 24 October
Rain. High 50°, low 41°.
Pressure29.56 inHg
Wind27.7 mph NW
Humidity74%
Visibility—
Dew point42°
Sun, 2544° / 41°0.6
44 °
Demster, Sunday, 25 October
Rain. High 44°, low 41°.
Pressure29.59 inHg
Wind23.4 mph N
Humidity92%
Visibility—
Dew point41°
Mon, 2645° / 44°0.12
45 °
Demster, Monday, 26 October
Light rain. High 45°, low 44°.
Pressure29.74 inHg
Wind13.8 mph NW
Humidity88%
Visibility—
Dew point42°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2754° / 43°0.17
54 °
Demster, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high54°
Average low43°
Average precipitation0.17 in
Chance of precipitation48%
Record high75° (2023)
Record low29° (1976)
Wed, 2853° / 42°0.17
53 °
Demster, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high53°
Average low42°
Average precipitation0.17 in
Chance of precipitation48%
Record high73° (1984)
Record low30° (1976)
Thu, 2951° / 40°0.11
51 °
Demster, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high51°
Average low40°
Average precipitation0.11 in
Chance of precipitation45%
Record high68° (1989)
Record low29° (1965)
Fri, 3052° / 41°0.12
52 °
Demster, Friday, 30 October
Climate normal for this date — 60-year average.
Average high52°
Average low41°
Average precipitation0.12 in
Chance of precipitation27%
Record high74° (2024)
Record low31° (1978)
Sat, 3153° / 40°0.13
53 °
Demster, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high53°
Average low40°
Average precipitation0.13 in
Chance of precipitation42%
Record high76° (2024)
Record low29° (1972)
Sun, 0154° / 42°0.17
54 °
Demster, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high54°
Average low42°
Average precipitation0.17 in
Chance of precipitation52%
Record high71° (2024)
Record low30° (1965)
Mon, 0253° / 42°0.24
53 °
Demster, Monday, 2 November
Climate normal for this date — 60-year average.
Average high53°
Average low42°
Average precipitation0.24 in
Chance of precipitation58%
Record high71° (1971)
Record low25° (1965)
Tue, 0353° / 40°0.15
53 °
Demster, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high53°
Average low40°
Average precipitation0.15 in
Chance of precipitation52%
Record high69° (1961)
Record low26° (2002)
Wed, 0451° / 40°0.16
51 °
Demster, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high51°
Average low40°
Average precipitation0.16 in
Chance of precipitation58%
Record high70° (2022)
Record low29° (2013)
Thu, 0551° / 40°0.16
51 °
Demster, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high51°
Average low40°
Average precipitation0.16 in
Chance of precipitation53%
Record high73° (2022)
Record low28° (1965)
Fri, 0651° / 40°0.17
51 °
Demster, Friday, 6 November
Climate normal for this date — 60-year average.
Average high51°
Average low40°
Average precipitation0.17 in
Chance of precipitation58%
Record high71° (2005)
Record low29° (1987)
Sat, 0749° / 38°0.13
49 °
Demster, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high49°
Average low38°
Average precipitation0.13 in
Chance of precipitation55%
Record high69° (1975)
Record low23° (1962)
Sun, 0848° / 37°0.16
48 °
Demster, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high48°
Average low37°
Average precipitation0.16 in
Chance of precipitation50%
Record high66° (1975)
Record low25° (1992)
Mon, 0949° / 37°0.13
49 °
Demster, Monday, 9 November
Climate normal for this date — 60-year average.
Average high49°
Average low37°
Average precipitation0.13 in
Chance of precipitation43%
Record high68° (2020)
Record low23° (1976)
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 Demster, NY 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 Demster, NY 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.