Monthly outlook for Roslyn, SD: average high 57.7°, average low 42.5°. That is 2.2° above the climate normal for October. Precipitation is expected on 6 days (about 0.6 inches), against a normal of 4 days and 1.1 inches. The warmest day looks like 22 October (71.2°), the coolest 26 October (24.9°).
57.7°/42.5°
Average high / low
+2.2°
Above normal
6 / 4
Wet days / normal
0.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
11 October – 20 October
60.4°
54.8°
+3.1°
21 October – 30 October
53.2°
51°
+1.3°
31 October – 9 November
at normal
45°
—
October records over 66 years
83.5°1 October 2023All-time high
12.4°26 October 2020All-time low
Climate normals and records are computed from the nearest reference point — Enemy Swim (11 mi).
Mon, 1262° / 47°0.14
62 °
Roslyn, Monday, 12 October
Rain. High 62°, low 47°.
Pressure29.77 inHg
Wind10 mph NE
Humidity93%
Visibility1.8 mi
Dew point51°
Tue, 1351° / 44°0.01
51 °
Roslyn, Tuesday, 13 October
Light rain. High 51°, low 44°.
Pressure30.06 inHg
Wind10 mph NW
Humidity76%
Visibility6.2 mi
Dew point40°
Wed, 1455° / 45°0
55 °
Roslyn, Wednesday, 14 October
Clear. High 55°, low 45°.
Pressure30.27 inHg
Wind2.7 mph NE
Humidity61%
Visibility6.2 mi
Dew point38°
Thu, 1555° / 47°0.07
55 °
Roslyn, Thursday, 15 October
Light rain. High 55°, low 47°.
Pressure30.21 inHg
Wind11.2 mph NW
Humidity74%
Visibility6.2 mi
Dew point45°
Fri, 1653° / 38°0
53 °
Roslyn, Friday, 16 October
Clear. High 53°, low 38°.
Pressure30.71 inHg
Wind21.7 mph N
Humidity58%
Visibility—
Dew point32°
Sat, 1757° / 41°0
57 °
Roslyn, Saturday, 17 October
Partly cloudy. High 57°, low 41°.
Pressure30.18 inHg
Wind26.1 mph S
Humidity31%
Visibility—
Dew point23°
Sun, 1870° / 44°0
70 °
Roslyn, Sunday, 18 October
Partly cloudy. High 70°, low 44°.
Pressure29.88 inHg
Wind19.6 mph S
Humidity28%
Visibility—
Dew point28°
Mon, 1967° / 48°0
67 °
Roslyn, Monday, 19 October
Partly cloudy. High 67°, low 48°.
Pressure30.18 inHg
Wind14.5 mph SE
Humidity34%
Visibility—
Dew point33°
Tue, 2067° / 47°0
67 °
Roslyn, Tuesday, 20 October
Overcast. High 67°, low 47°.
Pressure29.88 inHg
Wind22.1 mph S
Humidity44%
Visibility—
Dew point40°
Wed, 2166° / 51°0.04
66 °
Roslyn, Wednesday, 21 October
Light rain. High 66°, low 51°.
Pressure29.85 inHg
Wind20.1 mph S
Humidity30%
Visibility—
Dew point30°
Thu, 2271° / 50°0.07
71 °
Roslyn, Thursday, 22 October
Light rain. High 71°, low 50°.
Pressure29.88 inHg
Wind14.8 mph N
Humidity45%
Visibility—
Dew point44°
Fri, 2351° / 41°0.23
51 °
Roslyn, Friday, 23 October
Rain. High 51°, low 41°.
Pressure30.24 inHg
Wind17.7 mph N
Humidity56%
Visibility—
Dew point32°
Sat, 2439° / 33°0.06
39 °
Roslyn, Saturday, 24 October
Light snow. High 39°, low 33°.
Pressure30.42 inHg
Wind14.8 mph NW
Humidity77%
Visibility—
Dew point30°
Sun, 2555° / 30°0
55 °
Roslyn, Sunday, 25 October
Mostly clear. High 55°, low 30°.
Pressure30.03 inHg
Wind19 mph SW
Humidity37%
Visibility—
Dew point21°
Mon, 2638° / 25°0
38 °
Roslyn, Monday, 26 October
Light snow. High 38°, low 25°.
Pressure30.33 inHg
Wind19.8 mph NW
Humidity52%
Visibility—
Dew point18°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2751° / 37°0.06
51 °
Roslyn, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high51°
Average low37°
Average precipitation0.06 in
Chance of precipitation28%
Record high69° (1966)
Record low16° (2020)
Wed, 2849° / 36°0.02
49 °
Roslyn, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high49°
Average low36°
Average precipitation0.02 in
Chance of precipitation17%
Record high68° (2024)
Record low21° (2023)
Thu, 2949° / 35°0.07
49 °
Roslyn, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high49°
Average low35°
Average precipitation0.07 in
Chance of precipitation30%
Record high66° (2007)
Record low18° (1991)
Fri, 3048° / 35°0.09
48 °
Roslyn, Friday, 30 October
Climate normal for this date — 60-year average.
Average high48°
Average low35°
Average precipitation0.09 in
Chance of precipitation30%
Record high66° (2007)
Record low16° (1991)
Sat, 3147° / 33°0.08
47 °
Roslyn, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high47°
Average low33°
Average precipitation0.08 in
Chance of precipitation20%
Record high69° (1990)
Record low18° (1996)
Sun, 0146° / 34°0.06
46 °
Roslyn, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high46°
Average low34°
Average precipitation0.06 in
Chance of precipitation27%
Record high69° (1990)
Record low13° (1984)
Mon, 0246° / 33°0.05
46 °
Roslyn, Monday, 2 November
Climate normal for this date — 60-year average.
Average high46°
Average low33°
Average precipitation0.05 in
Chance of precipitation22%
Record high71° (1978)
Record low10° (1991)
Tue, 0345° / 33°0.04
45 °
Roslyn, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high45°
Average low33°
Average precipitation0.04 in
Chance of precipitation22%
Record high68° (1978)
Record low6° (1991)
Wed, 0445° / 31°0.02
45 °
Roslyn, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high45°
Average low31°
Average precipitation0.02 in
Chance of precipitation12%
Record high67° (2015)
Record low3° (1991)
Thu, 0546° / 32°0.03
46 °
Roslyn, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high46°
Average low32°
Average precipitation0.03 in
Chance of precipitation15%
Record high69° (2016)
Record low11° (2003)
Fri, 0645° / 31°0.03
45 °
Roslyn, Friday, 6 November
Climate normal for this date — 60-year average.
Average high45°
Average low31°
Average precipitation0.03 in
Chance of precipitation13%
Record high69° (2020)
Record low1° (1991)
Sat, 0745° / 31°0.04
45 °
Roslyn, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high45°
Average low31°
Average precipitation0.04 in
Chance of precipitation13%
Record high66° (1999)
Record low-1° (1991)
Sun, 0844° / 30°0.06
44 °
Roslyn, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high44°
Average low30°
Average precipitation0.06 in
Chance of precipitation18%
Record high68° (1999)
Record low7° (2003)
Mon, 0941° / 29°0.08
41 °
Roslyn, Monday, 9 November
Climate normal for this date — 60-year average.
Average high41°
Average low29°
Average precipitation0.08 in
Chance of precipitation23%
Record high62° (1999)
Record low11° (2018)
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 Roslyn, 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 Roslyn, 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.