Monthly outlook for Hanna, SD: average high 51.1°, average low 32.4°. That is 1.4° below the climate normal for October. Precipitation is expected on 3 days (about 0.5 inches), against a normal of 4 days and 0.9 inches. The warmest day looks like 20 October (65.7°), the coolest 26 October (19.5°).
51.1°/32.4°
Average high / low
−1.4°
Below normal
3 / 4
Wet days / normal
0.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
16 October – 25 October
55.8°
55.5°
+0.2°
26 October – 4 November
43.4°
49.7°
-3.5°
5 November – 14 November
at normal
45.5°
—
October records over 66 years
86.9°4 October 1963All-time high
-5.4°30 October 1991All-time low
Climate normals and records are computed from the nearest reference point — Mountain Plains (14 mi).
Sat, 1763° / 32°0
63 °
Hanna, Saturday, 17 October
Clear. High 63°, low 32°.
Pressure30.03 inHg
Wind8.6 mph SW
Humidity21%
Visibility6.2 mi
Dew point17°
Sun, 1858° / 40°0
58 °
Hanna, Sunday, 18 October
Clear. High 58°, low 40°.
Pressure30.09 inHg
Wind7.7 mph NE
Humidity40%
Visibility6.2 mi
Dew point31°
Mon, 1963° / 38°0
63 °
Hanna, Monday, 19 October
Clear. High 63°, low 38°.
Pressure29.97 inHg
Wind2.1 mph SE
Humidity31%
Visibility6.2 mi
Dew point30°
Tue, 2066° / 47°0
66 °
Hanna, Tuesday, 20 October
Clear. High 66°, low 47°.
Pressure29.83 inHg
Wind11.7 mph S
Humidity34%
Visibility—
Dew point34°
Wed, 2159° / 44°0
59 °
Hanna, Wednesday, 21 October
Clear. High 59°, low 44°.
Pressure30.12 inHg
Wind8 mph SW
Humidity41%
Visibility—
Dew point33°
Thu, 2265° / 44°0
65 °
Hanna, Thursday, 22 October
Partly cloudy. High 65°, low 44°.
Pressure29.94 inHg
Wind15.3 mph SW
Humidity33%
Visibility—
Dew point31°
Fri, 2364° / 49°0
64 °
Hanna, Friday, 23 October
Overcast. High 64°, low 49°.
Pressure29.62 inHg
Wind10.1 mph S
Humidity39%
Visibility—
Dew point37°
Sat, 2439° / 24°0.24
39 °
Hanna, Saturday, 24 October
Snow. High 39°, low 24°.
Pressure30.15 inHg
Wind16.8 mph NW
Humidity90%
Visibility—
Dew point26°
Sun, 2533° / 20°0.11
33 °
Hanna, Sunday, 25 October
Light snow. High 33°, low 20°.
Pressure30.33 inHg
Wind3.3 mph SW
Humidity79%
Visibility—
Dew point26°
Mon, 2640° / 19°0
40 °
Hanna, Monday, 26 October
Partly cloudy. High 40°, low 19°.
Pressure29.91 inHg
Wind8.5 mph NW
Humidity60%
Visibility—
Dew point24°
Tue, 2742° / 27°0
42 °
Hanna, Tuesday, 27 October
Partly cloudy. High 42°, low 27°.
Pressure29.83 inHg
Wind9.6 mph W
Humidity66%
Visibility—
Dew point27°
Wed, 2849° / 29°0
49 °
Hanna, Wednesday, 28 October
Overcast. High 49°, low 29°.
Pressure29.56 inHg
Wind12.2 mph SW
Humidity73%
Visibility—
Dew point35°
Thu, 2938° / 23°0.08
38 °
Hanna, Thursday, 29 October
Light snow. High 38°, low 23°.
Pressure29.85 inHg
Wind15.4 mph W
Humidity81%
Visibility—
Dew point25°
Fri, 3039° / 23°0.03
39 °
Hanna, Friday, 30 October
Light snow. High 39°, low 23°.
Pressure29.85 inHg
Wind17 mph NW
Humidity69%
Visibility—
Dew point26°
Sat, 3152° / 34°0
52 °
Hanna, Saturday, 31 October
Overcast. High 52°, low 34°.
Pressure29.77 inHg
Wind12.3 mph W
Humidity40%
Visibility—
Dew point23°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 0148° / 31°0.08
48 °
Hanna, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high48°
Average low31°
Average precipitation0.08 in
Chance of precipitation25%
Record high70° (1965)
Record low0° (2002)
Mon, 0247° / 31°0.05
47 °
Hanna, Monday, 2 November
Climate normal for this date — 60-year average.
Average high47°
Average low31°
Average precipitation0.05 in
Chance of precipitation25%
Record high73° (2008)
Record low-8° (1991)
Tue, 0347° / 31°0.04
47 °
Hanna, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high47°
Average low31°
Average precipitation0.04 in
Chance of precipitation23%
Record high71° (2020)
Record low-1° (1991)
Wed, 0450° / 31°0.02
50 °
Hanna, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high50°
Average low31°
Average precipitation0.02 in
Chance of precipitation17%
Record high71° (1978)
Record low8° (1967)
Thu, 0548° / 31°0.04
48 °
Hanna, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high48°
Average low31°
Average precipitation0.04 in
Chance of precipitation25%
Record high72° (2020)
Record low3° (2003)
Fri, 0648° / 30°0.06
48 °
Hanna, Friday, 6 November
Climate normal for this date — 60-year average.
Average high48°
Average low30°
Average precipitation0.06 in
Chance of precipitation18%
Record high70° (2020)
Record low7° (1991)
Sat, 0748° / 30°0.04
48 °
Hanna, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high48°
Average low30°
Average precipitation0.04 in
Chance of precipitation17%
Record high73° (1999)
Record low5° (1991)
Sun, 0846° / 30°0.06
46 °
Hanna, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high46°
Average low30°
Average precipitation0.06 in
Chance of precipitation22%
Record high74° (1999)
Record low7° (2000)
Mon, 0943° / 28°0.07
43 °
Hanna, Monday, 9 November
Climate normal for this date — 60-year average.
Average high43°
Average low28°
Average precipitation0.07 in
Chance of precipitation28%
Record high70° (2016)
Record low0° (1966)
Tue, 1045° / 26°0.05
45 °
Hanna, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high45°
Average low26°
Average precipitation0.05 in
Chance of precipitation23%
Record high67° (2007)
Record low-6° (1986)
Wed, 1142° / 26°0.02
42 °
Hanna, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high42°
Average low26°
Average precipitation0.02 in
Chance of precipitation25%
Record high67° (2005)
Record low0° (2014)
Thu, 1245° / 27°0.02
45 °
Hanna, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high45°
Average low27°
Average precipitation0.02 in
Chance of precipitation18%
Record high73° (1999)
Record low-9° (1986)
Fri, 1345° / 28°0.05
45 °
Hanna, Friday, 13 November
Climate normal for this date — 60-year average.
Average high45°
Average low28°
Average precipitation0.05 in
Chance of precipitation27%
Record high68° (1999)
Record low-10° (2014)
Sat, 1445° / 29°0.04
45 °
Hanna, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high45°
Average low29°
Average precipitation0.04 in
Chance of precipitation25%
Record high70° (2025)
Record low-5° (2014)
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 Hanna, 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 Hanna, 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.