Monthly outlook for Tyndall, SD: average high 69.8°, average low 51.2°. That is 4.8° above the climate normal for October. Precipitation is expected on 2 days (about 0.4 inches), against a normal of 3 days and 1.0 inches. The warmest day looks like 10 October (87.6°), the coolest 17 October (32.4°).
69.8°/51.2°
Average high / low
+4.8°
Above normal
2 / 3
Wet days / normal
0.4 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 October – 18 October
68.8°
62.1°
+3.7°
19 October – 28 October
71.5°
58.5°
+7.3°
29 October – 7 November
at normal
52.5°
—
October records over 66 years
90.7°3 October 2025All-time high
8.8°26 October 2020All-time low
Sat, 1088° / 67°0
88 °
Tyndall, Saturday, 10 October
Clear. High 88°, low 67°.
Pressure29.65 inHg
Wind18.6 mph S
Humidity30%
Visibility6.2 mi
Dew point48°
Sun, 1186° / 63°0
86 °
Tyndall, Sunday, 11 October
Overcast. High 86°, low 63°.
Pressure29.65 inHg
Wind10.8 mph S
Humidity32%
Visibility6.2 mi
Dew point48°
Mon, 1271° / 53°0.01
71 °
Tyndall, Monday, 12 October
Light rain. High 71°, low 53°.
Pressure29.77 inHg
Wind9 mph NE
Humidity65%
Visibility6.2 mi
Dew point52°
Tue, 1363° / 55°0
63 °
Tyndall, Tuesday, 13 October
Overcast. High 63°, low 55°.
Pressure29.97 inHg
Wind11.1 mph N
Humidity61%
Visibility—
Dew point46°
Wed, 1460° / 54°0.15
60 °
Tyndall, Wednesday, 14 October
Light rain. High 60°, low 54°.
Pressure29.83 inHg
Wind13.6 mph NE
Humidity70%
Visibility—
Dew point49°
Thu, 1567° / 47°0.26
67 °
Tyndall, Thursday, 15 October
Light rain. High 67°, low 47°.
Pressure29.47 inHg
Wind36.5 mph W
Humidity81%
Visibility—
Dew point53°
Fri, 1649° / 40°0
49 °
Tyndall, Friday, 16 October
Overcast. High 49°, low 40°.
Pressure30.21 inHg
Wind28.5 mph NW
Humidity42%
Visibility—
Dew point24°
Sat, 1753° / 32°0
53 °
Tyndall, Saturday, 17 October
Clear. High 53°, low 32°.
Pressure30.39 inHg
Wind11.6 mph S
Humidity31%
Visibility—
Dew point16°
Sun, 1867° / 43°0
67 °
Tyndall, Sunday, 18 October
Overcast. High 67°, low 43°.
Pressure30.09 inHg
Wind12 mph S
Humidity33%
Visibility—
Dew point30°
Mon, 1974° / 48°0
74 °
Tyndall, Monday, 19 October
Clear. High 74°, low 48°.
Pressure30.06 inHg
Wind14.4 mph S
Humidity37%
Visibility—
Dew point39°
Tue, 2073° / 55°0
73 °
Tyndall, Tuesday, 20 October
Clear. High 73°, low 55°.
Pressure30.03 inHg
Wind21.1 mph S
Humidity29%
Visibility—
Dew point34°
Wed, 2173° / 52°0
73 °
Tyndall, Wednesday, 21 October
Clear. High 73°, low 52°.
Pressure30.03 inHg
Wind15.7 mph S
Humidity28%
Visibility—
Dew point32°
Thu, 2270° / 50°0
70 °
Tyndall, Thursday, 22 October
Overcast. High 70°, low 50°.
Pressure30.21 inHg
Wind6.9 mph SE
Humidity37%
Visibility—
Dew point38°
Fri, 2370° / 51°0
70 °
Tyndall, Friday, 23 October
Overcast. High 70°, low 51°.
Pressure30.15 inHg
Wind12.5 mph SE
Humidity46%
Visibility—
Dew point44°
Sat, 2469° / 56°0.01
69 °
Tyndall, Saturday, 24 October
Light rain. High 69°, low 56°.
Pressure29.94 inHg
Wind15.4 mph S
Humidity47%
Visibility—
Dew point46°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 2557° / 40°0.05
57 °
Tyndall, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high57°
Average low40°
Average precipitation0.05 in
Chance of precipitation17%
Record high79° (1989)
Record low21° (2020)
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)
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.