Monthly outlook for Demster, NY: average high 58.2°, average low 46.4°. That is 1° above the climate normal for October. Precipitation is expected on 7 days (about 3.4 inches), against a normal of 8 days and 2.8 inches. The warmest day looks like 13 October (70.8°), the coolest 22 October (35.3°).
58.2°/46.4°
Average high / low
+1°
Above normal
7 / 8
Wet days / normal
3.4 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
12 October – 21 October
59.3°
57.5°
+1°
22 October – 31 October
56.4°
53.8°
+1.5°
1 November – 10 November
at normal
50.6°
—
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).
Tue, 1371° / 55°0.61
71 °
Demster, Tuesday, 13 October
Rain. High 71°, low 55°.
Pressure29.77 inHg
Wind12.4 mph S
Humidity93%
Visibility6.2 mi
Dew point62°
Wed, 1467° / 59°0.04
67 °
Demster, Wednesday, 14 October
Light rain. High 67°, low 59°.
Pressure29.94 inHg
Wind17.3 mph NW
Humidity80%
Visibility6.2 mi
Dew point55°
Thu, 1558° / 52°0
58 °
Demster, Thursday, 15 October
Overcast. High 58°, low 52°.
Pressure30.27 inHg
Wind6 mph NE
Humidity64%
Visibility6.2 mi
Dew point40°
Fri, 1656° / 50°1
56 °
Demster, Friday, 16 October
Rain. High 56°, low 50°.
Pressure29.68 inHg
Wind36.2 mph NW
Humidity90%
Visibility—
Dew point51°
Sat, 1752° / 43°0.2
52 °
Demster, Saturday, 17 October
Light rain. High 52°, low 43°.
Pressure30.27 inHg
Wind33.9 mph NW
Humidity63%
Visibility—
Dew point32°
Sun, 1855° / 40°0
55 °
Demster, Sunday, 18 October
Overcast. High 55°, low 40°.
Pressure30.45 inHg
Wind15.5 mph N
Humidity60%
Visibility—
Dew point33°
Mon, 1964° / 41°0
64 °
Demster, Monday, 19 October
Clear. High 64°, low 41°.
Pressure30.36 inHg
Wind12.4 mph S
Humidity50%
Visibility—
Dew point35°
Tue, 2057° / 51°0.03
57 °
Demster, Tuesday, 20 October
Light rain. High 57°, low 51°.
Pressure30.30 inHg
Wind9.7 mph W
Humidity79%
Visibility—
Dew point48°
Wed, 2152° / 42°0
52 °
Demster, Wednesday, 21 October
Light rain. High 52°, low 42°.
Pressure30.47 inHg
Wind11.8 mph NE
Humidity60%
Visibility—
Dew point36°
Thu, 2254° / 35°0
54 °
Demster, Thursday, 22 October
Mostly clear. High 54°, low 35°.
Pressure30.62 inHg
Wind10.3 mph SE
Humidity59%
Visibility—
Dew point32°
Fri, 2358° / 44°0.31
58 °
Demster, Friday, 23 October
Rain. High 58°, low 44°.
Pressure30.24 inHg
Wind16.4 mph W
Humidity75%
Visibility—
Dew point45°
Sat, 2453° / 43°0.01
53 °
Demster, Saturday, 24 October
Light rain. High 53°, low 43°.
Pressure30.30 inHg
Wind15.1 mph N
Humidity66%
Visibility—
Dew point37°
Sun, 2565° / 49°0.27
65 °
Demster, Sunday, 25 October
Rain. High 65°, low 49°.
Pressure29.85 inHg
Wind17.2 mph SW
Humidity75%
Visibility—
Dew point51°
Mon, 2655° / 43°0.25
55 °
Demster, Monday, 26 October
Light rain. High 55°, low 43°.
Pressure29.65 inHg
Wind18.7 mph NW
Humidity89%
Visibility—
Dew point46°
Tue, 2753° / 40°0.67
53 °
Demster, Tuesday, 27 October
Heavy rain. High 53°, low 40°.
Pressure29.38 inHg
Wind26.6 mph N
Humidity68%
Visibility—
Dew point42°
From day 17 onward the outlook is built from 60-year climate statistics
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)
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)
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.