Monthly outlook for James, SD: average high 61.3°, average low 46°. That is 2° above the climate normal for October. Precipitation is expected on 5 days (about 0.7 inches), against a normal of 3 days and 1.1 inches. The warmest day looks like 10 October (85°), the coolest 17 October (35.1°).
61.3°/46°
Average high / low
+2°
Above normal
5 / 3
Wet days / normal
0.7 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 October – 17 October
63.1°
58.9°
+2.3°
18 October – 27 October
58.2°
55°
+1.8°
28 October – 6 November
at normal
48.8°
—
October records over 66 years
87.6°3 October 2025All-time high
0.1°26 October 2020All-time low
Climate normals and records are computed from the nearest reference point — Groton (6 mi).
Fri, 0977° / 44°0
77 °
James, Friday, 9 October
Partly cloudy. High 77°, low 44°.
Pressure29.88 inHg
Wind10 mph S
Humidity55%
Visibility6.2 mi
Dew point52°
Sat, 1085° / 66°0
85 °
James, Saturday, 10 October
Clear. High 85°, low 66°.
Pressure29.50 inHg
Wind18.4 mph S
Humidity36%
Visibility6.2 mi
Dew point50°
Sun, 1167° / 51°0
67 °
James, Sunday, 11 October
Overcast. High 67°, low 51°.
Pressure29.71 inHg
Wind12.6 mph NE
Humidity68%
Visibility6.2 mi
Dew point54°
Mon, 1253° / 46°0.28
53 °
James, Monday, 12 October
Rain. High 53°, low 46°.
Pressure29.97 inHg
Wind9.7 mph NE
Humidity86%
Visibility6.2 mi
Dew point44°
Tue, 1353° / 45°0
53 °
James, Tuesday, 13 October
Overcast. High 53°, low 45°.
Pressure30.15 inHg
Wind8.8 mph N
Humidity65%
Visibility—
Dew point40°
Wed, 1463° / 47°0.28
63 °
James, Wednesday, 14 October
Rain. High 63°, low 47°.
Pressure29.68 inHg
Wind13.7 mph E
Humidity71%
Visibility—
Dew point52°
Thu, 1562° / 45°0.06
62 °
James, Thursday, 15 October
Light rain. High 62°, low 45°.
Pressure29.50 inHg
Wind23.5 mph NW
Humidity77%
Visibility—
Dew point50°
Fri, 1646° / 41°0.01
46 °
James, Friday, 16 October
Light rain. High 46°, low 41°.
Pressure30.56 inHg
Wind16.2 mph NW
Humidity57%
Visibility—
Dew point30°
Sat, 1754° / 35°0
54 °
James, Saturday, 17 October
Clear. High 54°, low 35°.
Pressure30.62 inHg
Wind12.6 mph S
Humidity44%
Visibility—
Dew point27°
Sun, 1849° / 46°0.04
49 °
James, Sunday, 18 October
Light rain. High 49°, low 46°.
Pressure30.18 inHg
Wind17.4 mph S
Humidity86%
Visibility—
Dew point44°
Mon, 1960° / 49°0.02
60 °
James, Monday, 19 October
Light rain. High 60°, low 49°.
Pressure29.94 inHg
Wind12.5 mph S
Humidity78%
Visibility—
Dew point47°
Tue, 2065° / 47°0
65 °
James, Tuesday, 20 October
Clear. High 65°, low 47°.
Pressure30.06 inHg
Wind16.3 mph NW
Humidity31%
Visibility—
Dew point30°
Wed, 2169° / 45°0
69 °
James, Wednesday, 21 October
Overcast. High 69°, low 45°.
Pressure29.94 inHg
Wind22.2 mph W
Humidity34%
Visibility—
Dew point32°
Thu, 2250° / 43°0.05
50 °
James, Thursday, 22 October
Light rain. High 50°, low 43°.
Pressure30.03 inHg
Wind26.1 mph NW
Humidity65%
Visibility—
Dew point37°
Fri, 2358° / 41°0
58 °
James, Friday, 23 October
Overcast. High 58°, low 41°.
Pressure29.71 inHg
Wind21.4 mph SE
Humidity40%
Visibility—
Dew point30°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 2454° / 37°0.04
54 °
James, Saturday, 24 October
Climate normal for this date — 60-year average.
Average high54°
Average low37°
Average precipitation0.04 in
Chance of precipitation17%
Record high79° (1989)
Record low10° (2020)
Sun, 2554° / 37°0.04
54 °
James, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high54°
Average low37°
Average precipitation0.04 in
Chance of precipitation17%
Record high79° (1989)
Record low15° (2020)
Mon, 2654° / 37°0.03
54 °
James, Monday, 26 October
Climate normal for this date — 60-year average.
Average high54°
Average low37°
Average precipitation0.03 in
Chance of precipitation13%
Record high77° (1989)
Record low0° (2020)
Tue, 2753° / 37°0.04
53 °
James, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high53°
Average low37°
Average precipitation0.04 in
Chance of precipitation25%
Record high69° (1966)
Record low7° (2020)
Wed, 2852° / 36°0.03
52 °
James, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high52°
Average low36°
Average precipitation0.03 in
Chance of precipitation18%
Record high71° (2016)
Record low18° (2017)
Thu, 2951° / 35°0.08
51 °
James, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high51°
Average low35°
Average precipitation0.08 in
Chance of precipitation32%
Record high67° (2007)
Record low18° (2020)
Fri, 3050° / 35°0.07
50 °
James, Friday, 30 October
Climate normal for this date — 60-year average.
Average high50°
Average low35°
Average precipitation0.07 in
Chance of precipitation25%
Record high70° (1965)
Record low16° (1991)
Sat, 3150° / 33°0.06
50 °
James, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high50°
Average low33°
Average precipitation0.06 in
Chance of precipitation18%
Record high73° (2016)
Record low18° (2019)
Sun, 0149° / 34°0.05
49 °
James, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high49°
Average low34°
Average precipitation0.05 in
Chance of precipitation25%
Record high74° (1990)
Record low14° (1984)
Mon, 0248° / 32°0.03
48 °
James, Monday, 2 November
Climate normal for this date — 60-year average.
Average high48°
Average low32°
Average precipitation0.03 in
Chance of precipitation18%
Record high72° (2022)
Record low10° (1991)
Tue, 0347° / 33°0.04
47 °
James, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high47°
Average low33°
Average precipitation0.04 in
Chance of precipitation15%
Record high72° (1978)
Record low7° (1991)
Wed, 0447° / 31°0.02
47 °
James, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high47°
Average low31°
Average precipitation0.02 in
Chance of precipitation13%
Record high68° (1978)
Record low6° (1995)
Thu, 0547° / 32°0.03
47 °
James, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high47°
Average low32°
Average precipitation0.03 in
Chance of precipitation13%
Record high70° (2016)
Record low9° (2003)
Fri, 0646° / 31°0.03
46 °
James, Friday, 6 November
Climate normal for this date — 60-year average.
Average high46°
Average low31°
Average precipitation0.03 in
Chance of precipitation15%
Record high73° (2020)
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 James, 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 James, 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.