Monthly outlook for Jefferson, NY: average high 54.4°, average low 38.7°. That is 0.4° above the climate normal for October. Precipitation is expected on 7 days (about 3.4 inches), against a normal of 6 days and 1.9 inches. The warmest day looks like 13 October (71.5°), the coolest 18 October (21.2°).
54.4°/38.7°
Average high / low
+0.4°
Above normal
7 / 6
Wet days / normal
3.4 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
11 October – 20 October
53.3°
54.5°
-0.7°
21 October – 30 October
56.2°
50.9°
+2.9°
31 October – 9 November
at normal
47.7°
—
October records over 66 years
81.1°4 October 2023All-time high
19.2°31 October 2011All-time low
Climate normals and records are computed from the nearest reference point — Summit (6 mi).
Mon, 1265° / 42°0.35
65 °
Jefferson, Monday, 12 October
Heavy rain. High 65°, low 42°.
Pressure29.85 inHg
Wind8.7 mph NW
Humidity70%
Visibility6.2 mi
Dew point53°
Tue, 1372° / 47°0.28
72 °
Jefferson, Tuesday, 13 October
Rain. High 72°, low 47°.
Pressure29.85 inHg
Wind8.6 mph SW
Humidity88%
Visibility2.6 mi
Dew point61°
Wed, 1460° / 51°0.07
60 °
Jefferson, Wednesday, 14 October
Light rain. High 60°, low 51°.
Pressure29.88 inHg
Wind10 mph NW
Humidity89%
Visibility6.2 mi
Dew point53°
Thu, 1555° / 44°0
55 °
Jefferson, Thursday, 15 October
Overcast. High 55°, low 44°.
Pressure30.21 inHg
Wind6.7 mph N
Humidity60%
Visibility6.2 mi
Dew point40°
Fri, 1653° / 38°0.37
53 °
Jefferson, Friday, 16 October
Rain. High 53°, low 38°.
Pressure29.56 inHg
Wind18.3 mph NW
Humidity98%
Visibility—
Dew point51°
Sat, 1733° / 25°0.19
33 °
Jefferson, Saturday, 17 October
Snow. High 33°, low 25°.
Pressure30.12 inHg
Wind20.4 mph NW
Humidity94%
Visibility—
Dew point27°
Sun, 1837° / 21°0
37 °
Jefferson, Sunday, 18 October
Partly cloudy. High 37°, low 21°.
Pressure30.56 inHg
Wind14.3 mph NW
Humidity49%
Visibility—
Dew point13°
Mon, 1953° / 30°0
53 °
Jefferson, Monday, 19 October
Mostly clear. High 53°, low 30°.
Pressure30.47 inHg
Wind12.5 mph W
Humidity45%
Visibility—
Dew point24°
Tue, 2056° / 34°0
56 °
Jefferson, Tuesday, 20 October
Clear. High 56°, low 34°.
Pressure30.45 inHg
Wind5.8 mph NW
Humidity64%
Visibility—
Dew point37°
Wed, 2155° / 38°0
55 °
Jefferson, Wednesday, 21 October
Overcast. High 55°, low 38°.
Pressure30.62 inHg
Wind7.1 mph S
Humidity70%
Visibility—
Dew point38°
Thu, 2257° / 37°0
57 °
Jefferson, Thursday, 22 October
Overcast. High 57°, low 37°.
Pressure30.62 inHg
Wind7.3 mph S
Humidity68%
Visibility—
Dew point39°
Fri, 2361° / 41°0
61 °
Jefferson, Friday, 23 October
Partly cloudy. High 61°, low 41°.
Pressure30.45 inHg
Wind5.2 mph SW
Humidity66%
Visibility—
Dew point43°
Sat, 2458° / 44°0
58 °
Jefferson, Saturday, 24 October
Overcast. High 58°, low 44°.
Pressure30.15 inHg
Wind12.3 mph SW
Humidity77%
Visibility—
Dew point49°
Sun, 2557° / 46°0.99
57 °
Jefferson, Sunday, 25 October
Rain. High 57°, low 46°.
Pressure29.85 inHg
Wind13 mph SW
Humidity95%
Visibility—
Dew point54°
Mon, 2649° / 37°0.02
49 °
Jefferson, Monday, 26 October
Light rain. High 49°, low 37°.
Pressure29.94 inHg
Wind8 mph NW
Humidity75%
Visibility—
Dew point37°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2751° / 37°0.15
51 °
Jefferson, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high51°
Average low37°
Average precipitation0.15 in
Chance of precipitation28%
Record high71° (2023)
Record low21° (1976)
Wed, 2850° / 35°0.18
50 °
Jefferson, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high50°
Average low35°
Average precipitation0.18 in
Chance of precipitation32%
Record high72° (1984)
Record low22° (1976)
Thu, 2948° / 34°0.14
48 °
Jefferson, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high48°
Average low34°
Average precipitation0.14 in
Chance of precipitation35%
Record high64° (1989)
Record low21° (1965)
Fri, 3049° / 34°0.11
49 °
Jefferson, Friday, 30 October
Climate normal for this date — 60-year average.
Average high49°
Average low34°
Average precipitation0.11 in
Chance of precipitation23%
Record high69° (2024)
Record low22° (2008)
Sat, 3150° / 34°0.06
50 °
Jefferson, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high50°
Average low34°
Average precipitation0.06 in
Chance of precipitation22%
Record high71° (2024)
Record low19° (2011)
Sun, 0150° / 36°0.1
50 °
Jefferson, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high50°
Average low36°
Average precipitation0.1 in
Chance of precipitation32%
Record high68° (1974)
Record low25° (2011)
Mon, 0250° / 36°0.13
50 °
Jefferson, Monday, 2 November
Climate normal for this date — 60-year average.
Average high50°
Average low36°
Average precipitation0.13 in
Chance of precipitation40%
Record high70° (1982)
Record low20° (1965)
Tue, 0350° / 35°0.1
50 °
Jefferson, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high50°
Average low35°
Average precipitation0.1 in
Chance of precipitation47%
Record high68° (1982)
Record low19° (1993)
Wed, 0447° / 34°0.07
47 °
Jefferson, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high47°
Average low34°
Average precipitation0.07 in
Chance of precipitation25%
Record high68° (1994)
Record low22° (2013)
Thu, 0547° / 34°0.13
47 °
Jefferson, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high47°
Average low34°
Average precipitation0.13 in
Chance of precipitation40%
Record high68° (2024)
Record low13° (1962)
Fri, 0647° / 34°0.1
47 °
Jefferson, Friday, 6 November
Climate normal for this date — 60-year average.
Average high47°
Average low34°
Average precipitation0.1 in
Chance of precipitation40%
Record high69° (2022)
Record low21° (1962)
Sat, 0745° / 33°0.08
45 °
Jefferson, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high45°
Average low33°
Average precipitation0.08 in
Chance of precipitation38%
Record high67° (1975)
Record low6° (1962)
Sun, 0845° / 32°0.11
45 °
Jefferson, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high45°
Average low32°
Average precipitation0.11 in
Chance of precipitation32%
Record high65° (2020)
Record low17° (2002)
Mon, 0946° / 32°0.12
46 °
Jefferson, Monday, 9 November
Climate normal for this date — 60-year average.
Average high46°
Average low32°
Average precipitation0.12 in
Chance of precipitation33%
Record high67° (2020)
Record low16° (1971)
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 Jefferson, 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 Jefferson, 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.