Monthly outlook for Sinai, SD: average high 55.8°, average low 47.1°. That is 5.8° above the climate normal for October. Precipitation is expected on 9 days (about 6.6 inches), against a normal of 3 days and 0.8 inches. The warmest day looks like 1 November (63.3°), the coolest 14 November (36.9°).
55.8°/47.1°
Average high / low
+5.8°
Above normal
9 / 3
Wet days / normal
6.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
30 October – 8 November
56.8°
47.8°
+5°
9 November – 18 November
54.2°
41.5°
+7.1°
19 November – 28 November
at normal
36.1°
—
October records over 66 years
88.5°3 October 2025All-time high
8.2°26 October 2020All-time low
Climate normals and records are computed from the nearest reference point — Nunda (6 mi).
Sat, 3160° / 44°0.86
60 °
Sinai, Saturday, 31 October
Heavy rain. High 60°, low 44°.
Pressure30.09 inHg
Wind10.1 mph S
Humidity90%
Visibility6.2 mi
Dew point55°
Sun, 0163° / 51°0.01
63 °
Sinai, Sunday, 1 November
Light rain. High 63°, low 51°.
Pressure30.12 inHg
Wind13.4 mph S
Humidity83%
Visibility6.2 mi
Dew point54°
Mon, 0259° / 56°2.39
59 °
Sinai, Monday, 2 November
Heavy rain. High 59°, low 56°.
Pressure29.65 inHg
Wind16.4 mph SE
Humidity95%
Visibility1.3 mi
Dew point57°
Tue, 0362° / 54°1.07
62 °
Sinai, Tuesday, 3 November
Rain. High 62°, low 54°.
Pressure29.56 inHg
Wind7.4 mph E
Humidity94%
Visibility2.6 mi
Dew point59°
Wed, 0453° / 48°0.17
53 °
Sinai, Wednesday, 4 November
Rain. High 53°, low 48°.
Pressure29.74 inHg
Wind14.7 mph NW
Humidity84%
Visibility—
Dew point47°
Thu, 0548° / 45°0.28
48 °
Sinai, Thursday, 5 November
Rain. High 48°, low 45°.
Pressure29.91 inHg
Wind11.4 mph NW
Humidity92%
Visibility—
Dew point46°
Fri, 0656° / 44°0
56 °
Sinai, Friday, 6 November
Overcast. High 56°, low 44°.
Pressure29.91 inHg
Wind9.1 mph S
Humidity70%
Visibility—
Dew point44°
Sat, 0757° / 47°0.84
57 °
Sinai, Saturday, 7 November
Rain. High 57°, low 47°.
Pressure29.97 inHg
Wind13.5 mph NE
Humidity65%
Visibility—
Dew point44°
Sun, 0853° / 51°0.3
53 °
Sinai, Sunday, 8 November
Rain. High 53°, low 51°.
Pressure30.18 inHg
Wind14.2 mph NE
Humidity97%
Visibility—
Dew point51°
Mon, 0956° / 52°0.39
56 °
Sinai, Monday, 9 November
Rain. High 56°, low 52°.
Pressure30.09 inHg
Wind14.2 mph E
Humidity95%
Visibility—
Dew point53°
Tue, 1057° / 50°0.24
57 °
Sinai, Tuesday, 10 November
Rain. High 57°, low 50°.
Pressure29.88 inHg
Wind10.7 mph SE
Humidity80%
Visibility—
Dew point49°
Wed, 1159° / 46°0
59 °
Sinai, Wednesday, 11 November
Mostly clear. High 59°, low 46°.
Pressure29.83 inHg
Wind6.8 mph SE
Humidity69%
Visibility—
Dew point46°
Thu, 1258° / 48°0
58 °
Sinai, Thursday, 12 November
Overcast. High 58°, low 48°.
Pressure29.59 inHg
Wind9.8 mph SE
Humidity71%
Visibility—
Dew point46°
Fri, 1349° / 43°0.01
49 °
Sinai, Friday, 13 November
Light rain. High 49°, low 43°.
Pressure29.74 inHg
Wind20.2 mph NW
Humidity81%
Visibility—
Dew point41°
Sat, 1446° / 37°0
46 °
Sinai, Saturday, 14 November
Clear. High 46°, low 37°.
Pressure29.74 inHg
Wind14.8 mph NW
Humidity62%
Visibility—
Dew point31°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 1542° / 28°0.04
42 °
Sinai, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high42°
Average low28°
Average precipitation0.04 in
Chance of precipitation17%
Record high63° (2001)
Record low11° (2000)
Mon, 1642° / 28°0.06
42 °
Sinai, Monday, 16 November
Climate normal for this date — 60-year average.
Average high42°
Average low28°
Average precipitation0.06 in
Chance of precipitation18%
Record high67° (2001)
Record low0° (2014)
Tue, 1741° / 27°0.05
41 °
Sinai, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high41°
Average low27°
Average precipitation0.05 in
Chance of precipitation18%
Record high64° (2001)
Record low4° (2014)
Wed, 1840° / 27°0.07
40 °
Sinai, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high40°
Average low27°
Average precipitation0.07 in
Chance of precipitation25%
Record high65° (1999)
Record low3° (1996)
Thu, 1940° / 26°0.09
40 °
Sinai, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high40°
Average low26°
Average precipitation0.09 in
Chance of precipitation25%
Record high58° (2003)
Record low7° (1996)
Fri, 2038° / 25°0.05
38 °
Sinai, Friday, 20 November
Climate normal for this date — 60-year average.
Average high38°
Average low25°
Average precipitation0.05 in
Chance of precipitation15%
Record high61° (1962)
Record low2° (1985)
Sat, 2138° / 23°0.02
38 °
Sinai, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high38°
Average low23°
Average precipitation0.02 in
Chance of precipitation15%
Record high62° (2012)
Record low-4° (1985)
Sun, 2238° / 24°0.02
38 °
Sinai, Sunday, 22 November
Climate normal for this date — 60-year average.
Average high38°
Average low24°
Average precipitation0.02 in
Chance of precipitation18%
Record high58° (1974)
Record low6° (1970)
Mon, 2337° / 24°0.03
37 °
Sinai, Monday, 23 November
Climate normal for this date — 60-year average.
Average high37°
Average low24°
Average precipitation0.03 in
Chance of precipitation15%
Record high54° (2006)
Record low-3° (1985)
Tue, 2437° / 23°0.04
37 °
Sinai, Tuesday, 24 November
Climate normal for this date — 60-year average.
Average high37°
Average low23°
Average precipitation0.04 in
Chance of precipitation8%
Record high59° (1990)
Record low-6° (1985)
Wed, 2536° / 23°0.02
36 °
Sinai, Wednesday, 25 November
Climate normal for this date — 60-year average.
Average high36°
Average low23°
Average precipitation0.02 in
Chance of precipitation12%
Record high58° (1960)
Record low0° (1975)
Thu, 2633° / 22°0.06
33 °
Sinai, Thursday, 26 November
Climate normal for this date — 60-year average.
Average high33°
Average low22°
Average precipitation0.06 in
Chance of precipitation37%
Record high56° (1998)
Record low-1° (1985)
Fri, 2732° / 20°0.07
32 °
Sinai, Friday, 27 November
Climate normal for this date — 60-year average.
Average high32°
Average low20°
Average precipitation0.07 in
Chance of precipitation25%
Record high60° (2017)
Record low-7° (2014)
Sat, 2833° / 19°0.07
33 °
Sinai, Saturday, 28 November
Climate normal for this date — 60-year average.
Average high33°
Average low19°
Average precipitation0.07 in
Chance of precipitation22%
Record high56° (1998)
Record low-8° (1985)
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 Sinai, SD 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 Sinai, SD 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.