Monthly outlook for Sempronius, NY: average high 56°, average low 39.4°. That is 1.2° above the climate normal for October. Precipitation is expected on 5 days (about 1.1 inches), against a normal of 7 days and 2.3 inches. The warmest day looks like 30 October (66.8°), the coolest 24 October (27.8°).
56°/39.4°
Average high / low
+1.2°
Above normal
5 / 7
Wet days / normal
1.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
16 October – 25 October
53.7°
54.9°
-0.7°
26 October – 4 November
60°
52.1°
+4.4°
5 November – 14 November
at normal
46.9°
—
October records over 66 years
82.4°1 October 2019All-time high
24.8°20 October 1972All-time low
Climate normals and records are computed from the nearest reference point — Groton (11 mi).
Sat, 1744° / 37°0.06
44 °
Sempronius, Saturday, 17 October
Light rain. High 44°, low 37°.
Pressure30.33 inHg
Wind14.1 mph NW
Humidity67%
Visibility6.2 mi
Dew point28°
Sun, 1855° / 35°0
55 °
Sempronius, Sunday, 18 October
Clear. High 55°, low 35°.
Pressure30.59 inHg
Wind7.4 mph SW
Humidity59%
Visibility6.2 mi
Dew point38°
Mon, 1958° / 39°0
58 °
Sempronius, Monday, 19 October
Clear. High 58°, low 39°.
Pressure30.45 inHg
Wind3.6 mph NW
Humidity48%
Visibility6.2 mi
Dew point38°
Tue, 2056° / 44°0
56 °
Sempronius, Tuesday, 20 October
Overcast. High 56°, low 44°.
Pressure30.33 inHg
Wind10.4 mph N
Humidity91%
Visibility—
Dew point46°
Wed, 2157° / 40°0
57 °
Sempronius, Wednesday, 21 October
Clear. High 57°, low 40°.
Pressure30.42 inHg
Wind6.6 mph NE
Humidity57%
Visibility—
Dew point35°
Thu, 2253° / 35°0
53 °
Sempronius, Thursday, 22 October
Clear. High 53°, low 35°.
Pressure30.33 inHg
Wind14.6 mph S
Humidity60%
Visibility—
Dew point32°
Fri, 2350° / 38°0
50 °
Sempronius, Friday, 23 October
Overcast. High 50°, low 38°.
Pressure30.15 inHg
Wind11.4 mph N
Humidity76%
Visibility—
Dew point41°
Sat, 2447° / 28°0
47 °
Sempronius, Saturday, 24 October
Clear. High 47°, low 28°.
Pressure30.39 inHg
Wind10.6 mph N
Humidity57%
Visibility—
Dew point25°
Sun, 2554° / 33°0
54 °
Sempronius, Sunday, 25 October
Clear. High 54°, low 33°.
Pressure30.45 inHg
Wind10.9 mph S
Humidity56%
Visibility—
Dew point30°
Mon, 2658° / 36°0
58 °
Sempronius, Monday, 26 October
Clear. High 58°, low 36°.
Pressure30.36 inHg
Wind7.4 mph SE
Humidity58%
Visibility—
Dew point34°
Tue, 2760° / 41°0
60 °
Sempronius, Tuesday, 27 October
Overcast. High 60°, low 41°.
Pressure30.27 inHg
Wind8.1 mph SE
Humidity55%
Visibility—
Dew point35°
Wed, 2863° / 45°0.01
63 °
Sempronius, Wednesday, 28 October
Light rain. High 63°, low 45°.
Pressure30.21 inHg
Wind8.7 mph SW
Humidity73%
Visibility—
Dew point47°
Thu, 2957° / 46°0.05
57 °
Sempronius, Thursday, 29 October
Light rain. High 57°, low 46°.
Pressure30.27 inHg
Wind7 mph SE
Humidity81%
Visibility—
Dew point45°
Fri, 3067° / 50°0.14
67 °
Sempronius, Friday, 30 October
Light rain. High 67°, low 50°.
Pressure30.09 inHg
Wind12.5 mph SW
Humidity74%
Visibility—
Dew point52°
Sat, 3156° / 41°0.06
56 °
Sempronius, Saturday, 31 October
Light rain. High 56°, low 41°.
Pressure30.12 inHg
Wind10.4 mph N
Humidity92%
Visibility—
Dew point48°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 0153° / 39°0.12
53 °
Sempronius, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high53°
Average low39°
Average precipitation0.12 in
Chance of precipitation40%
Record high69° (1974)
Record low29° (1992)
Mon, 0252° / 39°0.18
52 °
Sempronius, Monday, 2 November
Climate normal for this date — 60-year average.
Average high52°
Average low39°
Average precipitation0.18 in
Chance of precipitation43%
Record high72° (1982)
Record low25° (1965)
Tue, 0352° / 38°0.09
52 °
Sempronius, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high52°
Average low38°
Average precipitation0.09 in
Chance of precipitation47%
Record high71° (1982)
Record low28° (1988)
Wed, 0450° / 38°0.12
50 °
Sempronius, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high50°
Average low38°
Average precipitation0.12 in
Chance of precipitation33%
Record high70° (2015)
Record low26° (1991)
Thu, 0550° / 38°0.11
50 °
Sempronius, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high50°
Average low38°
Average precipitation0.11 in
Chance of precipitation47%
Record high70° (2022)
Record low23° (1991)
Fri, 0649° / 37°0.12
49 °
Sempronius, Friday, 6 November
Climate normal for this date — 60-year average.
Average high49°
Average low37°
Average precipitation0.12 in
Chance of precipitation40%
Record high71° (2022)
Record low26° (1962)
Sat, 0748° / 36°0.1
48 °
Sempronius, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high48°
Average low36°
Average precipitation0.1 in
Chance of precipitation47%
Record high68° (1975)
Record low12° (1962)
Sun, 0848° / 35°0.15
48 °
Sempronius, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high48°
Average low35°
Average precipitation0.15 in
Chance of precipitation40%
Record high67° (2020)
Record low23° (1976)
Mon, 0948° / 35°0.11
48 °
Sempronius, Monday, 9 November
Climate normal for this date — 60-year average.
Average high48°
Average low35°
Average precipitation0.11 in
Chance of precipitation37%
Record high69° (2020)
Record low19° (2019)
Tue, 1048° / 35°0.15
48 °
Sempronius, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high48°
Average low35°
Average precipitation0.15 in
Chance of precipitation52%
Record high69° (2020)
Record low19° (2017)
Wed, 1146° / 35°0.16
46 °
Sempronius, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high46°
Average low35°
Average precipitation0.16 in
Chance of precipitation58%
Record high64° (2012)
Record low17° (2017)
Thu, 1245° / 33°0.16
45 °
Sempronius, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high45°
Average low33°
Average precipitation0.16 in
Chance of precipitation50%
Record high66° (1964)
Record low17° (2019)
Fri, 1344° / 31°0.09
44 °
Sempronius, Friday, 13 November
Climate normal for this date — 60-year average.
Average high44°
Average low31°
Average precipitation0.09 in
Chance of precipitation52%
Record high59° (1985)
Record low15° (2019)
Sat, 1444° / 33°0.13
44 °
Sempronius, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high44°
Average low33°
Average precipitation0.13 in
Chance of precipitation40%
Record high64° (1994)
Record low15° (1986)
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 Sempronius, 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 Sempronius, 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.