As of 03:30 CST

Weather in Sinai, SD

44°

Sinai, Monday, 9 November, 03:30

Clear. Feels like 38°. High 62°, low 36°.

Pressure29.91 inHg

Wind10.4 mph S

Humidity70%

Visibility6.2 mi

Dew point35°

See detailed hourly forecast

Monthly outlook for Sinai, SD: average high 48°, average low 34.3°. That is 4.4° above the climate normal for November. Precipitation is expected on 3 days (about 1.9 inches), against a normal of 3 days and 0.8 inches. The warmest day looks like 9 November (62.5°), the coolest 14 November (26.4°).

48°/34.3°

Average high / low

+4.4°

Above normal

3 / 3

Wet days / normal

1.9 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
9 November – 18 November	50.6°	41.5°	+5.1°
19 November – 28 November	43.5°	36.1°	+4.1°
29 November – 8 December	at normal	30.6°	—

November records over 66 years

73.9°6 November 2020All-time high

-11.2°30 November 1964All-time low

Climate normals and records are computed from the nearest reference point — Nunda (6 mi).

Tue, 1058° / 34°

0.03

58 °

Sinai, Tuesday, 10 November

Light rain. High 58°, low 34°.

Pressure30.06 inHg

Wind6.4 mph SW

Humidity47%

Visibility6.2 mi

Dew point36°

Wed, 1150° / 37°

0.04

50 °

Sinai, Wednesday, 11 November

Light rain. High 50°, low 37°.

Pressure30.12 inHg

Wind7.7 mph N

Humidity68%

Visibility6.2 mi

Dew point38°

Thu, 1239° / 32°

39 °

Sinai, Thursday, 12 November

Overcast. High 39°, low 32°.

Pressure30.27 inHg

Wind7.3 mph NE

Humidity73%

Visibility6.2 mi

Dew point24°

Fri, 1338° / 27°

38 °

Sinai, Friday, 13 November

Mostly clear. High 38°, low 27°.

Pressure30.24 inHg

Wind7.7 mph SE

Humidity75%

Visibility—

Dew point27°

Sat, 1438° / 26°

38 °

Sinai, Saturday, 14 November

Overcast. High 38°, low 26°.

Pressure30.18 inHg

Wind16.1 mph SE

Humidity75%

Visibility—

Dew point28°

Sun, 1551° / 33°

51 °

Sinai, Sunday, 15 November

Overcast. High 51°, low 33°.

Pressure29.83 inHg

Wind11.8 mph SE

Humidity68%

Visibility—

Dew point36°

Mon, 1656° / 40°

56 °

Sinai, Monday, 16 November

Overcast. High 56°, low 40°.

Pressure29.88 inHg

Wind12.9 mph S

Humidity64%

Visibility—

Dew point39°

Tue, 1755° / 43°

55 °

Sinai, Tuesday, 17 November

Overcast. High 55°, low 43°.

Pressure30.12 inHg

Wind11.3 mph S

Humidity52%

Visibility—

Dew point36°

Wed, 1859° / 42°

0.17

59 °

Sinai, Wednesday, 18 November

Rain. High 59°, low 42°.

Pressure29.97 inHg

Wind20.1 mph SE

Humidity77%

Visibility—

Dew point48°

Thu, 1959° / 42°

1.19

59 °

Sinai, Thursday, 19 November

Rain. High 59°, low 42°.

Pressure29.65 inHg

Wind23 mph S

Humidity95%

Visibility—

Dew point46°

Fri, 2039° / 34°

0.42

39 °

Sinai, Friday, 20 November

Snow. High 39°, low 34°.

Pressure29.88 inHg

Wind18.9 mph W

Humidity80%

Visibility—

Dew point32°

Sat, 2141° / 29°

41 °

Sinai, Saturday, 21 November

Clear. High 41°, low 29°.

Pressure30.27 inHg

Wind12.9 mph W

Humidity53%

Visibility—

Dew point22°

Sun, 2243° / 30°

43 °

Sinai, Sunday, 22 November

Partly cloudy. High 43°, low 30°.

Pressure30.00 inHg

Wind9 mph S

Humidity43%

Visibility—

Dew point19°

Mon, 2340° / 32°

40 °

Sinai, Monday, 23 November

Overcast. High 40°, low 32°.

Pressure30.00 inHg

Wind10.8 mph NW

Humidity56%

Visibility—

Dew point24°

Tue, 2440° / 30°

40 °

Sinai, Tuesday, 24 November

Overcast. High 40°, low 30°.

Pressure30.03 inHg

Wind11.5 mph NW

Humidity44%

Visibility—

Dew point19°

From day 17 onward the outlook is built from 60-year climate statistics

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)

Sun, 2933° / 21°

0.04

33 °

Sinai, Sunday, 29 November

Climate normal for this date — 60-year average.

Average high33°

Average low21°

Average precipitation0.04 in

Chance of precipitation20%

Record high55° (1998)

Record low-5° (1985)

Mon, 3032° / 20°

0.05

32 °

Sinai, Monday, 30 November

Climate normal for this date — 60-year average.

Average high32°

Average low20°

Average precipitation0.05 in

Chance of precipitation18%

Record high52° (1970)

Record low-11° (1964)

Tue, 0132° / 20°

0.06

32 °

Sinai, Tuesday, 1 December

Climate normal for this date — 60-year average.

Average high32°

Average low20°

Average precipitation0.06 in

Chance of precipitation27%

Record high60° (1998)

Record low-3° (1985)

Wed, 0231° / 18°

0.03

31 °

Sinai, Wednesday, 2 December

Climate normal for this date — 60-year average.

Average high31°

Average low18°

Average precipitation0.03 in

Chance of precipitation20%

Record high58° (1998)

Record low-12° (1985)

Thu, 0330° / 17°

0.02

30 °

Sinai, Thursday, 3 December

Climate normal for this date — 60-year average.

Average high30°

Average low17°

Average precipitation0.02 in

Chance of precipitation20%

Record high58° (1998)

Record low-15° (1985)

Fri, 0431° / 17°

0.03

31 °

Sinai, Friday, 4 December

Climate normal for this date — 60-year average.

Average high31°

Average low17°

Average precipitation0.03 in

Chance of precipitation17%

Record high48° (1960)

Record low-8° (1991)

Sat, 0531° / 17°

0.02

31 °

Sinai, Saturday, 5 December

Climate normal for this date — 60-year average.

Average high31°

Average low17°

Average precipitation0.02 in

Chance of precipitation10%

Record high50° (1998)

Record low-5° (2005)

Sun, 0628° / 15°

0.01

28 °

Sinai, Sunday, 6 December

Climate normal for this date — 60-year average.

Average high28°

Average low15°

Average precipitation0.01 in

Chance of precipitation10%

Record high50° (2023)

Record low-17° (1972)

Mon, 0728° / 16°

0.02

28 °

Sinai, Monday, 7 December

Climate normal for this date — 60-year average.

Average high28°

Average low16°

Average precipitation0.02 in

Chance of precipitation18%

Record high49° (2024)

Record low-17° (1972)

Tue, 0828° / 16°

0.02

28 °

Sinai, Tuesday, 8 December

Climate normal for this date — 60-year average.

Average high28°

Average low16°

Average precipitation0.02 in

Chance of precipitation17%

Record high48° (2020)

Record low-11° (1976)

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.