Monthly outlook for Thatcher, SD: average high 62.1°, average low 45.8°. That is 2.9° above the climate normal for October. Precipitation is expected on 3 days (about 0.5 inches), against a normal of 3 days and 0.7 inches. The warmest day looks like 20 October (73.9°), the coolest 16 October (34.8°).
62.1°/45.8°
Average high / low
+2.9°
Above normal
3 / 3
Wet days / normal
0.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
11 October – 20 October
61.6°
57.8°
+2.1°
21 October – 30 October
62.9°
53.7°
+5.1°
31 October – 9 November
at normal
47.8°
—
October records over 66 years
89.6°2 October 1997All-time high
-2.9°30 October 1991All-time low
Climate normals and records are computed from the nearest reference point — Eagle Butte (15 mi).
Mon, 1257° / 47°0.1
57 °
Thatcher, Monday, 12 October
Rain. High 57°, low 47°.
Pressure29.80 inHg
Wind7.5 mph N
Humidity77%
Visibility6.2 mi
Dew point48°
Tue, 1352° / 42°0.24
52 °
Thatcher, Tuesday, 13 October
Rain. High 52°, low 42°.
Pressure30.09 inHg
Wind7 mph NW
Humidity67%
Visibility6.2 mi
Dew point37°
Wed, 1454° / 40°0.01
54 °
Thatcher, Wednesday, 14 October
Light rain. High 54°, low 40°.
Pressure30.24 inHg
Wind2.7 mph N
Humidity54%
Visibility6.2 mi
Dew point36°
Thu, 1561° / 46°0.14
61 °
Thatcher, Thursday, 15 October
Rain. High 61°, low 46°.
Pressure30.27 inHg
Wind22.1 mph N
Humidity56%
Visibility—
Dew point39°
Fri, 1654° / 35°0
54 °
Thatcher, Friday, 16 October
Clear. High 54°, low 35°.
Pressure30.68 inHg
Wind17.8 mph S
Humidity54%
Visibility—
Dew point31°
Sat, 1763° / 39°0
63 °
Thatcher, Saturday, 17 October
Overcast. High 63°, low 39°.
Pressure30.18 inHg
Wind20.9 mph S
Humidity24%
Visibility—
Dew point16°
Sun, 1871° / 50°0
71 °
Thatcher, Sunday, 18 October
Overcast. High 71°, low 50°.
Pressure29.91 inHg
Wind18.3 mph NW
Humidity25%
Visibility—
Dew point30°
Mon, 1970° / 49°0
70 °
Thatcher, Monday, 19 October
Overcast. High 70°, low 49°.
Pressure30.03 inHg
Wind19.8 mph SE
Humidity29%
Visibility—
Dew point28°
Tue, 2074° / 52°0
74 °
Thatcher, Tuesday, 20 October
Overcast. High 74°, low 52°.
Pressure29.71 inHg
Wind23 mph NW
Humidity39%
Visibility—
Dew point39°
Wed, 2166° / 50°0
66 °
Thatcher, Wednesday, 21 October
Clear. High 66°, low 50°.
Pressure30.00 inHg
Wind18 mph NW
Humidity31%
Visibility—
Dew point30°
Thu, 2263° / 49°0
63 °
Thatcher, Thursday, 22 October
Overcast. High 63°, low 49°.
Pressure30.03 inHg
Wind8.7 mph E
Humidity46%
Visibility—
Dew point37°
Fri, 2367° / 47°0
67 °
Thatcher, Friday, 23 October
Clear. High 67°, low 47°.
Pressure30.15 inHg
Wind11.5 mph SE
Humidity36%
Visibility—
Dew point35°
Sat, 2470° / 52°0
70 °
Thatcher, Saturday, 24 October
Clear. High 70°, low 52°.
Pressure29.97 inHg
Wind16.6 mph N
Humidity29%
Visibility—
Dew point32°
Sun, 2558° / 47°0
58 °
Thatcher, Sunday, 25 October
Mostly clear. High 58°, low 47°.
Pressure30.24 inHg
Wind21.4 mph NW
Humidity27%
Visibility—
Dew point22°
Mon, 2655° / 38°0
55 °
Thatcher, Monday, 26 October
Overcast. High 55°, low 38°.
Pressure30.09 inHg
Wind11.5 mph SE
Humidity31%
Visibility—
Dew point19°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2753° / 35°0.02
53 °
Thatcher, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high53°
Average low35°
Average precipitation0.02 in
Chance of precipitation18%
Record high74° (1983)
Record low8° (2020)
Wed, 2852° / 34°0.06
52 °
Thatcher, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high52°
Average low34°
Average precipitation0.06 in
Chance of precipitation18%
Record high74° (1985)
Record low16° (1991)
Thu, 2951° / 34°0.12
51 °
Thatcher, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high51°
Average low34°
Average precipitation0.12 in
Chance of precipitation25%
Record high74° (1978)
Record low6° (1991)
Fri, 3049° / 33°0.03
49 °
Thatcher, Friday, 30 October
Climate normal for this date — 60-year average.
Average high49°
Average low33°
Average precipitation0.03 in
Chance of precipitation18%
Record high75° (1968)
Record low-3° (1991)
Sat, 3150° / 33°0.03
50 °
Thatcher, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high50°
Average low33°
Average precipitation0.03 in
Chance of precipitation20%
Record high76° (1990)
Record low1° (1991)
Sun, 0149° / 33°0.04
49 °
Thatcher, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high49°
Average low33°
Average precipitation0.04 in
Chance of precipitation13%
Record high69° (1978)
Record low8° (1991)
Mon, 0249° / 32°0.02
49 °
Thatcher, Monday, 2 November
Climate normal for this date — 60-year average.
Average high49°
Average low32°
Average precipitation0.02 in
Chance of precipitation13%
Record high76° (2022)
Record low2° (1991)
Tue, 0348° / 33°0.04
48 °
Thatcher, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high48°
Average low33°
Average precipitation0.04 in
Chance of precipitation20%
Record high69° (2020)
Record low-3° (1991)
Wed, 0449° / 31°0.01
49 °
Thatcher, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high49°
Average low31°
Average precipitation0.01 in
Chance of precipitation8%
Record high76° (1978)
Record low2° (1991)
Thu, 0548° / 31°0.04
48 °
Thatcher, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high48°
Average low31°
Average precipitation0.04 in
Chance of precipitation20%
Record high70° (2020)
Record low2° (2003)
Fri, 0648° / 29°0.02
48 °
Thatcher, Friday, 6 November
Climate normal for this date — 60-year average.
Average high48°
Average low29°
Average precipitation0.02 in
Chance of precipitation8%
Record high70° (2016)
Record low2° (2003)
Sat, 0747° / 29°0.04
47 °
Thatcher, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high47°
Average low29°
Average precipitation0.04 in
Chance of precipitation13%
Record high69° (2006)
Record low3° (2003)
Sun, 0846° / 29°0.05
46 °
Thatcher, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high46°
Average low29°
Average precipitation0.05 in
Chance of precipitation12%
Record high74° (1999)
Record low5° (2000)
Mon, 0943° / 28°0.04
43 °
Thatcher, Monday, 9 November
Climate normal for this date — 60-year average.
Average high43°
Average low28°
Average precipitation0.04 in
Chance of precipitation17%
Record high67° (2001)
Record low3° (2000)
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 Thatcher, 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 Thatcher, 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.