Monthly outlook for Tyndall, SD: average high 66.4°, average low 47.8°. That is 3.2° above the climate normal for October. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 3 days and 1.0 inches. The warmest day looks like 10 October (87.9°), the coolest 18 October (28.1°).
66.4°/47.8°
Average high / low
+3.2°
Above normal
0 / 3
Wet days / normal
0.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
10 October – 19 October
65.6°
61.7°
+2.1°
20 October – 29 October
67.9°
57.9°
+5.5°
30 October – 8 November
at normal
52.1°
—
October records over 66 years
90.7°3 October 2025All-time high
8.8°26 October 2020All-time low
Sun, 1187° / 67°0
87 °
Tyndall, Sunday, 11 October
Overcast. High 87°, low 67°.
Pressure29.65 inHg
Wind9.8 mph S
Humidity33%
Visibility6.2 mi
Dew point49°
Mon, 1276° / 57°0
76 °
Tyndall, Monday, 12 October
Clear. High 76°, low 57°.
Pressure29.68 inHg
Wind6.7 mph NW
Humidity55%
Visibility6.2 mi
Dew point54°
Tue, 1363° / 53°0
63 °
Tyndall, Tuesday, 13 October
Partly cloudy. High 63°, low 53°.
Pressure30.03 inHg
Wind9.8 mph N
Humidity52%
Visibility6.2 mi
Dew point40°
Wed, 1463° / 49°0
63 °
Tyndall, Wednesday, 14 October
Overcast. High 63°, low 49°.
Pressure30.27 inHg
Wind9.5 mph N
Humidity46%
Visibility—
Dew point38°
Thu, 1565° / 51°0
65 °
Tyndall, Thursday, 15 October
Overcast. High 65°, low 51°.
Pressure30.30 inHg
Wind9.3 mph S
Humidity51%
Visibility—
Dew point43°
Fri, 1655° / 38°0
55 °
Tyndall, Friday, 16 October
Overcast. High 55°, low 38°.
Pressure30.03 inHg
Wind31.1 mph NW
Humidity46%
Visibility—
Dew point28°
Sat, 1742° / 32°0
42 °
Tyndall, Saturday, 17 October
Overcast. High 42°, low 32°.
Pressure30.65 inHg
Wind23.1 mph NW
Humidity47%
Visibility—
Dew point19°
Sun, 1852° / 28°0
52 °
Tyndall, Sunday, 18 October
Mostly clear. High 52°, low 28°.
Pressure30.36 inHg
Wind20.5 mph S
Humidity33%
Visibility—
Dew point18°
Mon, 1965° / 41°0
65 °
Tyndall, Monday, 19 October
Clear. High 65°, low 41°.
Pressure30.00 inHg
Wind16.8 mph S
Humidity38%
Visibility—
Dew point31°
Tue, 2072° / 45°0
72 °
Tyndall, Tuesday, 20 October
Clear. High 72°, low 45°.
Pressure29.97 inHg
Wind16.3 mph S
Humidity39%
Visibility—
Dew point38°
Wed, 2174° / 54°0
74 °
Tyndall, Wednesday, 21 October
Clear. High 74°, low 54°.
Pressure29.83 inHg
Wind19.7 mph S
Humidity31%
Visibility—
Dew point37°
Thu, 2266° / 53°0.02
66 °
Tyndall, Thursday, 22 October
Light rain. High 66°, low 53°.
Pressure29.94 inHg
Wind13.4 mph NW
Humidity52%
Visibility—
Dew point44°
Fri, 2372° / 48°0
72 °
Tyndall, Friday, 23 October
Overcast. High 72°, low 48°.
Pressure29.77 inHg
Wind16 mph S
Humidity30%
Visibility—
Dew point32°
Sat, 2460° / 45°0
60 °
Tyndall, Saturday, 24 October
Overcast. High 60°, low 45°.
Pressure29.91 inHg
Wind22.3 mph NW
Humidity52%
Visibility—
Dew point36°
Sun, 2563° / 37°0
63 °
Tyndall, Sunday, 25 October
Overcast. High 63°, low 37°.
Pressure29.68 inHg
Wind19.1 mph S
Humidity33%
Visibility—
Dew point26°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2658° / 40°0.02
58 °
Tyndall, Monday, 26 October
Climate normal for this date — 60-year average.
Average high58°
Average low40°
Average precipitation0.02 in
Chance of precipitation15%
Record high78° (1989)
Record low9° (2020)
Tue, 2756° / 40°0.06
56 °
Tyndall, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high56°
Average low40°
Average precipitation0.06 in
Chance of precipitation20%
Record high80° (1999)
Record low9° (2020)
Wed, 2856° / 39°0.03
56 °
Tyndall, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high56°
Average low39°
Average precipitation0.03 in
Chance of precipitation17%
Record high79° (2016)
Record low18° (2017)
Thu, 2955° / 38°0.07
55 °
Tyndall, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high55°
Average low38°
Average precipitation0.07 in
Chance of precipitation23%
Record high73° (1978)
Record low21° (1991)
Fri, 3053° / 38°0.14
53 °
Tyndall, Friday, 30 October
Climate normal for this date — 60-year average.
Average high53°
Average low38°
Average precipitation0.14 in
Chance of precipitation28%
Record high74° (1965)
Record low17° (1991)
Sat, 3153° / 36°0.06
53 °
Tyndall, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high53°
Average low36°
Average precipitation0.06 in
Chance of precipitation23%
Record high78° (2016)
Record low13° (2002)
Sun, 0152° / 37°0.05
52 °
Tyndall, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high52°
Average low37°
Average precipitation0.05 in
Chance of precipitation18%
Record high74° (1990)
Record low14° (2002)
Mon, 0252° / 36°0.04
52 °
Tyndall, Monday, 2 November
Climate normal for this date — 60-year average.
Average high52°
Average low36°
Average precipitation0.04 in
Chance of precipitation17%
Record high76° (2005)
Record low11° (1991)
Tue, 0352° / 36°0.05
52 °
Tyndall, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high52°
Average low36°
Average precipitation0.05 in
Chance of precipitation20%
Record high74° (1978)
Record low5° (1991)
Wed, 0452° / 34°0.01
52 °
Tyndall, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high52°
Average low34°
Average precipitation0.01 in
Chance of precipitation10%
Record high73° (1978)
Record low-10° (1991)
Thu, 0552° / 35°0.04
52 °
Tyndall, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high52°
Average low35°
Average precipitation0.04 in
Chance of precipitation15%
Record high74° (2001)
Record low14° (1990)
Fri, 0651° / 35°0.03
51 °
Tyndall, Friday, 6 November
Climate normal for this date — 60-year average.
Average high51°
Average low35°
Average precipitation0.03 in
Chance of precipitation12%
Record high78° (2020)
Record low8° (1991)
Sat, 0752° / 34°0.03
52 °
Tyndall, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high52°
Average low34°
Average precipitation0.03 in
Chance of precipitation12%
Record high75° (2020)
Record low-7° (1991)
Sun, 0851° / 34°0.06
51 °
Tyndall, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high51°
Average low34°
Average precipitation0.06 in
Chance of precipitation15%
Record high78° (1999)
Record low-1° (1991)
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 Tyndall, 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 Tyndall, 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.