Monthly outlook for Thatcher, SD: average high 59.9°, average low 44.1°. That is 1.3° above the climate normal for October. Precipitation is expected on 2 days (about 0.7 inches), against a normal of 3 days and 0.8 inches. The warmest day looks like 10 October (83.4°), the coolest 17 October (28.7°).
59.9°/44.1°
Average high / low
+1.3°
Above normal
2 / 3
Wet days / normal
0.7 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 October – 18 October
57.2°
58.3°
-0.6°
19 October – 28 October
64.3°
55.4°
+4.9°
29 October – 7 November
at normal
48.8°
—
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).
Sat, 1083° / 57°0
83 °
Thatcher, Saturday, 10 October
Clear. High 83°, low 57°.
Pressure29.47 inHg
Wind9.2 mph W
Humidity26%
Visibility6.2 mi
Dew point43°
Sun, 1156° / 48°0
56 °
Thatcher, Sunday, 11 October
Overcast. High 56°, low 48°.
Pressure29.80 inHg
Wind16.2 mph N
Humidity79%
Visibility6.2 mi
Dew point49°
Mon, 1252° / 45°0.26
52 °
Thatcher, Monday, 12 October
Rain. High 52°, low 45°.
Pressure29.88 inHg
Wind6.4 mph NE
Humidity79%
Visibility6.2 mi
Dew point44°
Tue, 1349° / 40°0.02
49 °
Thatcher, Tuesday, 13 October
Light rain. High 49°, low 40°.
Pressure30.12 inHg
Wind6.3 mph N
Humidity66%
Visibility6.2 mi
Dew point37°
Wed, 1457° / 45°0
57 °
Thatcher, Wednesday, 14 October
Overcast. High 57°, low 45°.
Pressure30.24 inHg
Wind9 mph SE
Humidity57%
Visibility—
Dew point38°
Thu, 1553° / 45°0.39
53 °
Thatcher, Thursday, 15 October
Rain. High 53°, low 45°.
Pressure29.97 inHg
Wind30.5 mph NW
Humidity61%
Visibility—
Dew point36°
Fri, 1644° / 36°0
44 °
Thatcher, Friday, 16 October
Overcast. High 44°, low 36°.
Pressure30.36 inHg
Wind34.7 mph NW
Humidity51%
Visibility—
Dew point23°
Sat, 1743° / 29°0
43 °
Thatcher, Saturday, 17 October
Overcast. High 43°, low 29°.
Pressure30.53 inHg
Wind15.6 mph SE
Humidity34%
Visibility—
Dew point11°
Sun, 1857° / 35°0
57 °
Thatcher, Sunday, 18 October
Overcast. High 57°, low 35°.
Pressure30.15 inHg
Wind12.6 mph SE
Humidity36%
Visibility—
Dew point23°
Mon, 1961° / 42°0
61 °
Thatcher, Monday, 19 October
Clear. High 61°, low 42°.
Pressure30.18 inHg
Wind9.2 mph SE
Humidity35%
Visibility—
Dew point28°
Tue, 2077° / 47°0
77 °
Thatcher, Tuesday, 20 October
Clear. High 77°, low 47°.
Pressure29.97 inHg
Wind14.9 mph S
Humidity36%
Visibility—
Dew point37°
Wed, 2160° / 50°0
60 °
Thatcher, Wednesday, 21 October
Clear. High 60°, low 50°.
Pressure30.21 inHg
Wind19.4 mph N
Humidity49%
Visibility—
Dew point38°
Thu, 2263° / 44°0
63 °
Thatcher, Thursday, 22 October
Clear. High 63°, low 44°.
Pressure30.06 inHg
Wind19.1 mph SE
Humidity52%
Visibility—
Dew point38°
Fri, 2367° / 50°0
67 °
Thatcher, Friday, 23 October
Mostly clear. High 67°, low 50°.
Pressure29.74 inHg
Wind18.8 mph NW
Humidity35%
Visibility—
Dew point35°
Sat, 2458° / 47°0
58 °
Thatcher, Saturday, 24 October
Overcast. High 58°, low 47°.
Pressure30.00 inHg
Wind9.9 mph NW
Humidity50%
Visibility—
Dew point37°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 2555° / 36°0.01
55 °
Thatcher, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high55°
Average low36°
Average precipitation0.01 in
Chance of precipitation8%
Record high76° (1989)
Record low9° (2020)
Mon, 2655° / 36°0.04
55 °
Thatcher, Monday, 26 October
Climate normal for this date — 60-year average.
Average high55°
Average low36°
Average precipitation0.04 in
Chance of precipitation10%
Record high76° (1990)
Record low-2° (2020)
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)
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.