Monthly outlook for Demster, NY: average high 57.5°, average low 45.4°. That is 1.8° above the climate normal for October. Precipitation is expected on 3 days (about 1.3 inches), against a normal of 8 days and 2.7 inches. The warmest day looks like 30 October (65.6°), the coolest 18 October (35.5°).
57.5°/45.4°
Average high / low
+1.8°
Above normal
3 / 8
Wet days / normal
1.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
18 October – 27 October
56.5°
55.2°
+0.7°
28 October – 6 November
59.1°
52.1°
+3.9°
7 November – 16 November
at normal
46.7°
—
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, 1960° / 38°0
60 °
Demster, Monday, 19 October
Clear. High 60°, low 38°.
Pressure30.42 inHg
Wind9.9 mph W
Humidity63%
Visibility5.4 mi
Dew point45°
Tue, 2058° / 50°0
58 °
Demster, Tuesday, 20 October
Clear. High 58°, low 50°.
Pressure30.42 inHg
Wind15.1 mph N
Humidity76%
Visibility6.2 mi
Dew point45°
Wed, 2154° / 47°0
54 °
Demster, Wednesday, 21 October
Clear. High 54°, low 47°.
Pressure30.36 inHg
Wind1.5 mph NW
Humidity71%
Visibility6.2 mi
Dew point41°
Thu, 2256° / 51°0.03
56 °
Demster, Thursday, 22 October
Light rain. High 56°, low 51°.
Pressure30.18 inHg
Wind21.7 mph N
Humidity82%
Visibility—
Dew point49°
Fri, 2349° / 42°0
49 °
Demster, Friday, 23 October
Partly cloudy. High 49°, low 42°.
Pressure30.53 inHg
Wind17.9 mph NE
Humidity68%
Visibility—
Dew point35°
Sat, 2459° / 38°0
59 °
Demster, Saturday, 24 October
Overcast. High 59°, low 38°.
Pressure30.53 inHg
Wind12.3 mph S
Humidity49%
Visibility—
Dew point30°
Sun, 2565° / 45°0
65 °
Demster, Sunday, 25 October
Overcast. High 65°, low 45°.
Pressure30.33 inHg
Wind15 mph S
Humidity53%
Visibility—
Dew point38°
Mon, 2652° / 47°0.15
52 °
Demster, Monday, 26 October
Rain. High 52°, low 47°.
Pressure30.24 inHg
Wind15.5 mph W
Humidity70%
Visibility—
Dew point41°
Tue, 2754° / 42°0
54 °
Demster, Tuesday, 27 October
Clear. High 54°, low 42°.
Pressure30.30 inHg
Wind12.9 mph W
Humidity66%
Visibility—
Dew point40°
Wed, 2856° / 41°0
56 °
Demster, Wednesday, 28 October
Partly cloudy. High 56°, low 41°.
Pressure30.33 inHg
Wind8.9 mph SE
Humidity64%
Visibility—
Dew point38°
Thu, 2963° / 45°0
63 °
Demster, Thursday, 29 October
Overcast. High 63°, low 45°.
Pressure30.15 inHg
Wind16.1 mph S
Humidity53%
Visibility—
Dew point37°
Fri, 3066° / 59°0.41
66 °
Demster, Friday, 30 October
Rain. High 66°, low 59°.
Pressure29.85 inHg
Wind18.3 mph S
Humidity72%
Visibility—
Dew point56°
Sat, 3155° / 46°0.01
55 °
Demster, Saturday, 31 October
Light rain. High 55°, low 46°.
Pressure30.21 inHg
Wind17.3 mph W
Humidity66%
Visibility—
Dew point42°
Sun, 0158° / 46°0.67
58 °
Demster, Sunday, 1 November
Rain. High 58°, low 46°.
Pressure30.06 inHg
Wind20.7 mph SE
Humidity91%
Visibility—
Dew point44°
Mon, 0256° / 53°0
56 °
Demster, Monday, 2 November
Light rain. High 56°, low 53°.
Pressure30.06 inHg
Wind22.8 mph W
Humidity68%
Visibility—
Dew point44°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Tue, 1049° / 38°0.18
49 °
Demster, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high49°
Average low38°
Average precipitation0.18 in
Chance of precipitation50%
Record high71° (2020)
Record low22° (2017)
Wed, 1147° / 37°0.18
47 °
Demster, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high47°
Average low37°
Average precipitation0.18 in
Chance of precipitation60%
Record high65° (2020)
Record low21° (2017)
Thu, 1246° / 36°0.2
46 °
Demster, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high46°
Average low36°
Average precipitation0.2 in
Chance of precipitation67%
Record high67° (1964)
Record low23° (2019)
Fri, 1345° / 34°0.15
45 °
Demster, Friday, 13 November
Climate normal for this date — 60-year average.
Average high45°
Average low34°
Average precipitation0.15 in
Chance of precipitation58%
Record high61° (2005)
Record low19° (2019)
Sat, 1445° / 35°0.13
45 °
Demster, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high45°
Average low35°
Average precipitation0.13 in
Chance of precipitation52%
Record high65° (1994)
Record low17° (1996)
Sun, 1544° / 34°0.17
44 °
Demster, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high44°
Average low34°
Average precipitation0.17 in
Chance of precipitation57%
Record high64° (1989)
Record low19° (1967)
Mon, 1645° / 34°0.17
45 °
Demster, Monday, 16 November
Climate normal for this date — 60-year average.
Average high45°
Average low34°
Average precipitation0.17 in
Chance of precipitation53%
Record high63° (1989)
Record low16° (2019)
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.