Monthly outlook for Terry, SD: average high 54.1°, average low 36.7°. That is 1.2° below the climate normal for October. Precipitation is expected on 5 days (about 1.7 inches), against a normal of 4 days and 1.1 inches. The warmest day looks like 9 October (75.4°), the coolest 16 October (20.1°).
54.1°/36.7°
Average high / low
−1.2°
Below normal
5 / 4
Wet days / normal
1.7 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 October – 18 October
54°
56.5°
-1.4°
19 October – 28 October
54.2°
54.5°
-0.2°
29 October – 7 November
at normal
48.3°
—
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 (10 mi).
Sat, 1074° / 48°0.03
74 °
Terry, Saturday, 10 October
Light rain. High 74°, low 48°.
Pressure29.53 inHg
Wind8.7 mph SW
Humidity20%
Visibility6.2 mi
Dew point32°
Sun, 1150° / 41°0.03
50 °
Terry, Sunday, 11 October
Light rain. High 50°, low 41°.
Pressure29.83 inHg
Wind5.4 mph N
Humidity72%
Visibility6.2 mi
Dew point43°
Mon, 1256° / 40°0.13
56 °
Terry, Monday, 12 October
Light rain. High 56°, low 40°.
Pressure29.68 inHg
Wind3.4 mph W
Humidity67%
Visibility2.6 mi
Dew point47°
Tue, 1341° / 33°0.2
41 °
Terry, Tuesday, 13 October
Light rain. High 41°, low 33°.
Pressure30.03 inHg
Wind4.4 mph NE
Humidity93%
Visibility—
Dew point38°
Wed, 1445° / 38°0.26
45 °
Terry, Wednesday, 14 October
Light rain. High 45°, low 38°.
Pressure29.94 inHg
Wind9.2 mph NW
Humidity98%
Visibility—
Dew point38°
Thu, 1544° / 25°1.01
44 °
Terry, Thursday, 15 October
Snow. High 44°, low 25°.
Pressure30.09 inHg
Wind26.8 mph NW
Humidity92%
Visibility—
Dew point30°
Fri, 1635° / 20°0.01
35 °
Terry, Friday, 16 October
Light snow. High 35°, low 20°.
Pressure30.45 inHg
Wind23.9 mph NW
Humidity32%
Visibility—
Dew point3°
Sat, 1758° / 28°0
58 °
Terry, Saturday, 17 October
Overcast. High 58°, low 28°.
Pressure30.09 inHg
Wind11.7 mph NW
Humidity22%
Visibility—
Dew point16°
Sun, 1861° / 40°0
61 °
Terry, Sunday, 18 October
Overcast. High 61°, low 40°.
Pressure29.97 inHg
Wind6.8 mph SW
Humidity20%
Visibility—
Dew point17°
Mon, 1962° / 40°0
62 °
Terry, Monday, 19 October
Mostly clear. High 62°, low 40°.
Pressure29.94 inHg
Wind9 mph S
Humidity21%
Visibility—
Dew point19°
Tue, 2064° / 46°0
64 °
Terry, Tuesday, 20 October
Clear. High 64°, low 46°.
Pressure29.80 inHg
Wind12.5 mph SW
Humidity20%
Visibility—
Dew point20°
Wed, 2151° / 36°0
51 °
Terry, Wednesday, 21 October
Mostly clear. High 51°, low 36°.
Pressure30.06 inHg
Wind9.4 mph NE
Humidity54%
Visibility—
Dew point33°
Thu, 2242° / 35°0
42 °
Terry, Thursday, 22 October
Overcast. High 42°, low 35°.
Pressure30.27 inHg
Wind7.9 mph SE
Humidity91%
Visibility—
Dew point35°
Fri, 2355° / 34°0.08
55 °
Terry, Friday, 23 October
Light rain. High 55°, low 34°.
Pressure29.94 inHg
Wind8.2 mph SE
Humidity60%
Visibility—
Dew point36°
Sat, 2450° / 42°0
50 °
Terry, Saturday, 24 October
Overcast. High 50°, low 42°.
Pressure29.88 inHg
Wind6.3 mph SW
Humidity51%
Visibility—
Dew point32°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 2555° / 36°0.03
55 °
Terry, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high55°
Average low36°
Average precipitation0.03 in
Chance of precipitation15%
Record high75° (1989)
Record low2° (2020)
Mon, 2654° / 35°0.07
54 °
Terry, Monday, 26 October
Climate normal for this date — 60-year average.
Average high54°
Average low35°
Average precipitation0.07 in
Chance of precipitation22%
Record high72° (1960)
Record low-3° (2020)
Tue, 2752° / 33°0.05
52 °
Terry, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high52°
Average low33°
Average precipitation0.05 in
Chance of precipitation27%
Record high75° (2016)
Record low14° (2023)
Wed, 2852° / 34°0.06
52 °
Terry, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high52°
Average low34°
Average precipitation0.06 in
Chance of precipitation22%
Record high74° (2016)
Record low7° (1991)
Thu, 2950° / 33°0.11
50 °
Terry, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high50°
Average low33°
Average precipitation0.11 in
Chance of precipitation37%
Record high76° (1968)
Record low-2° (1991)
Fri, 3048° / 31°0.04
48 °
Terry, Friday, 30 October
Climate normal for this date — 60-year average.
Average high48°
Average low31°
Average precipitation0.04 in
Chance of precipitation27%
Record high73° (1968)
Record low-5° (1991)
Sat, 3148° / 31°0.05
48 °
Terry, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high48°
Average low31°
Average precipitation0.05 in
Chance of precipitation23%
Record high71° (1999)
Record low1° (1991)
Sun, 0148° / 31°0.08
48 °
Terry, 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 °
Terry, 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 °
Terry, 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 °
Terry, 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 °
Terry, 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 °
Terry, 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 °
Terry, 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)
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 Terry, 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 Terry, 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.