Monthly outlook for Alston, SC: average high 76.4°, average low 57.1°. That is 2° above the climate normal for October. Precipitation is expected on 4 days (about 2.1 inches), against a normal of 3 days and 1.3 inches. The warmest day looks like 14 October (87.7°), the coolest 19 October (41.2°).
76.4°/57.1°
Average high / low
+2°
Above normal
4 / 3
Wet days / normal
2.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 October – 18 October
79.7°
73.9°
+3.2°
19 October – 28 October
70.9°
70.6°
+0.2°
29 October – 7 November
at normal
68°
—
October records over 66 years
96.3°3 October 2019All-time high
36.3°27 October 1962All-time low
Climate normals and records are computed from the nearest reference point — Irmo (12 mi).
Sat, 1070° / 56°1.42
70 °
Alston, Saturday, 10 October
Heavy rain. High 70°, low 56°.
Pressure30.06 inHg
Wind10.4 mph NE
Humidity99%
Visibility2.0 mi
Dew point64°
Sun, 1173° / 65°0.45
73 °
Alston, Sunday, 11 October
Heavy rain. High 73°, low 65°.
Pressure29.97 inHg
Wind12 mph SW
Humidity66%
Visibility6.2 mi
Dew point59°
Mon, 1283° / 63°0
83 °
Alston, Monday, 12 October
Clear. High 83°, low 63°.
Pressure30.03 inHg
Wind8.4 mph NW
Humidity52%
Visibility6.2 mi
Dew point60°
Tue, 1387° / 59°0
87 °
Alston, Tuesday, 13 October
Clear. High 87°, low 59°.
Pressure30.03 inHg
Wind1.6 mph NW
Humidity51%
Visibility6.2 mi
Dew point61°
Wed, 1488° / 62°0
88 °
Alston, Wednesday, 14 October
Clear. High 88°, low 62°.
Pressure29.97 inHg
Wind6.8 mph W
Humidity40%
Visibility—
Dew point57°
Thu, 1586° / 68°0
86 °
Alston, Thursday, 15 October
Partly cloudy. High 86°, low 68°.
Pressure30.06 inHg
Wind7.6 mph S
Humidity56%
Visibility—
Dew point66°
Fri, 1687° / 67°0
87 °
Alston, Friday, 16 October
Clear. High 87°, low 67°.
Pressure30.03 inHg
Wind8.4 mph SW
Humidity47%
Visibility—
Dew point62°
Sat, 1785° / 55°0
85 °
Alston, Saturday, 17 October
Clear. High 85°, low 55°.
Pressure29.91 inHg
Wind14.8 mph W
Humidity42%
Visibility—
Dew point57°
Sun, 1862° / 45°0
62 °
Alston, Sunday, 18 October
Clear. High 62°, low 45°.
Pressure30.27 inHg
Wind10.9 mph NE
Humidity28%
Visibility—
Dew point26°
Mon, 1963° / 41°0
63 °
Alston, Monday, 19 October
Clear. High 63°, low 41°.
Pressure30.36 inHg
Wind9.4 mph NE
Humidity31%
Visibility—
Dew point29°
Tue, 2067° / 43°0
67 °
Alston, Tuesday, 20 October
Overcast. High 67°, low 43°.
Pressure30.36 inHg
Wind10.2 mph NE
Humidity42%
Visibility—
Dew point40°
Wed, 2170° / 51°0
70 °
Alston, Wednesday, 21 October
Partly cloudy. High 70°, low 51°.
Pressure30.33 inHg
Wind10.9 mph NE
Humidity55%
Visibility—
Dew point50°
Thu, 2269° / 60°0.16
69 °
Alston, Thursday, 22 October
Rain. High 69°, low 60°.
Pressure30.03 inHg
Wind12.2 mph SE
Humidity81%
Visibility—
Dew point60°
Fri, 2379° / 62°0.11
79 °
Alston, Friday, 23 October
Light rain. High 79°, low 62°.
Pressure29.85 inHg
Wind8.9 mph S
Humidity42%
Visibility—
Dew point52°
Sat, 2478° / 55°0
78 °
Alston, Saturday, 24 October
Partly cloudy. High 78°, low 55°.
Pressure29.94 inHg
Wind5.5 mph NE
Humidity49%
Visibility—
Dew point54°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 2569° / 54°0.09
69 °
Alston, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high69°
Average low54°
Average precipitation0.09 in
Chance of precipitation25%
Record high80° (1991)
Record low39° (2006)
Mon, 2670° / 54°0.12
70 °
Alston, Monday, 26 October
Climate normal for this date — 60-year average.
Average high70°
Average low54°
Average precipitation0.12 in
Chance of precipitation25%
Record high83° (2024)
Record low38° (2013)
Tue, 2770° / 54°0.11
70 °
Alston, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high70°
Average low54°
Average precipitation0.11 in
Chance of precipitation27%
Record high83° (1963)
Record low36° (1962)
Wed, 2870° / 55°0.09
70 °
Alston, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high70°
Average low55°
Average precipitation0.09 in
Chance of precipitation27%
Record high83° (1963)
Record low39° (2001)
Thu, 2969° / 53°0.06
69 °
Alston, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high69°
Average low53°
Average precipitation0.06 in
Chance of precipitation23%
Record high83° (2020)
Record low38° (2001)
Fri, 3069° / 53°0.11
69 °
Alston, Friday, 30 October
Climate normal for this date — 60-year average.
Average high69°
Average low53°
Average precipitation0.11 in
Chance of precipitation20%
Record high83° (2023)
Record low37° (1965)
Sat, 3170° / 53°0.07
70 °
Alston, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high70°
Average low53°
Average precipitation0.07 in
Chance of precipitation27%
Record high84° (1961)
Record low42° (2008)
Sun, 0170° / 53°0.1
70 °
Alston, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high70°
Average low53°
Average precipitation0.1 in
Chance of precipitation27%
Record high84° (1961)
Record low39° (1993)
Mon, 0269° / 53°0.09
69 °
Alston, Monday, 2 November
Climate normal for this date — 60-year average.
Average high69°
Average low53°
Average precipitation0.09 in
Chance of precipitation25%
Record high84° (1961)
Record low37° (2023)
Tue, 0368° / 52°0.04
68 °
Alston, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high68°
Average low52°
Average precipitation0.04 in
Chance of precipitation20%
Record high82° (1974)
Record low36° (1966)
Wed, 0467° / 51°0.09
67 °
Alston, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high67°
Average low51°
Average precipitation0.09 in
Chance of precipitation30%
Record high83° (1961)
Record low34° (1966)
Thu, 0566° / 51°0.06
66 °
Alston, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high66°
Average low51°
Average precipitation0.06 in
Chance of precipitation22%
Record high80° (1961)
Record low36° (2006)
Fri, 0667° / 50°0.05
67 °
Alston, Friday, 6 November
Climate normal for this date — 60-year average.
Average high67°
Average low50°
Average precipitation0.05 in
Chance of precipitation13%
Record high80° (2024)
Record low35° (1976)
Sat, 0767° / 50°0.11
67 °
Alston, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high67°
Average low50°
Average precipitation0.11 in
Chance of precipitation17%
Record high80° (2022)
Record low34° (1967)
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 Alston, SC 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 Alston, SC 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.