Monthly outlook for Rock Run, MD: average high 64.7°, average low 47.7°. That is 0.7° above the climate normal for October. Precipitation is expected on 2 days (about 1.0 inches), against a normal of 4 days and 1.9 inches. The warmest day looks like 14 October (80.1°), the coolest 18 October (33.2°).
64.7°/47.7°
Average high / low
+0.7°
Above normal
2 / 4
Wet days / normal
1.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
12 October – 21 October
67.5°
64.6°
+1.6°
22 October – 31 October
60.1°
60.9°
-0.5°
1 November – 10 November
at normal
58.2°
—
October records over 66 years
93.7°2 October 2019All-time high
31.6°24 October 1969All-time low
Climate normals and records are computed from the nearest reference point — Aberdeen Proving Ground (10 mi).
Tue, 1378° / 56°0
78 °
Rock Run, Tuesday, 13 October
Clear. High 78°, low 56°.
Pressure29.97 inHg
Wind6.1 mph S
Humidity66%
Visibility6.2 mi
Dew point63°
Wed, 1480° / 67°0
80 °
Rock Run, Wednesday, 14 October
Overcast. High 80°, low 67°.
Pressure29.91 inHg
Wind7.9 mph W
Humidity66%
Visibility6.2 mi
Dew point67°
Thu, 1568° / 56°0
68 °
Rock Run, Thursday, 15 October
Clear. High 68°, low 56°.
Pressure30.24 inHg
Wind6.4 mph N
Humidity60%
Visibility6.2 mi
Dew point49°
Fri, 1673° / 56°0.17
73 °
Rock Run, Friday, 16 October
Light rain. High 73°, low 56°.
Pressure29.71 inHg
Wind21.8 mph NW
Humidity81%
Visibility—
Dew point64°
Sat, 1756° / 41°0
56 °
Rock Run, Saturday, 17 October
Overcast. High 56°, low 41°.
Pressure30.27 inHg
Wind16.7 mph NW
Humidity50%
Visibility—
Dew point35°
Sun, 1852° / 33°0
52 °
Rock Run, Sunday, 18 October
Clear. High 52°, low 33°.
Pressure30.62 inHg
Wind7.4 mph S
Humidity41%
Visibility—
Dew point23°
Mon, 1962° / 40°0
62 °
Rock Run, Monday, 19 October
Clear. High 62°, low 40°.
Pressure30.53 inHg
Wind9.4 mph S
Humidity50%
Visibility—
Dew point36°
Tue, 2067° / 47°0
67 °
Rock Run, Tuesday, 20 October
Overcast. High 67°, low 47°.
Pressure30.36 inHg
Wind5.3 mph N
Humidity52%
Visibility—
Dew point42°
Wed, 2165° / 48°0
65 °
Rock Run, Wednesday, 21 October
Clear. High 65°, low 48°.
Pressure30.42 inHg
Wind10 mph NE
Humidity65%
Visibility—
Dew point48°
Thu, 2263° / 45°0
63 °
Rock Run, Thursday, 22 October
Clear. High 63°, low 45°.
Pressure30.59 inHg
Wind7 mph SE
Humidity61%
Visibility—
Dew point43°
Fri, 2366° / 47°0
66 °
Rock Run, Friday, 23 October
Overcast. High 66°, low 47°.
Pressure30.36 inHg
Wind12.9 mph SW
Humidity67%
Visibility—
Dew point48°
Sat, 2457° / 39°0.01
57 °
Rock Run, Saturday, 24 October
Light rain. High 57°, low 39°.
Pressure30.27 inHg
Wind16.9 mph NW
Humidity51%
Visibility—
Dew point38°
Sun, 2556° / 34°0
56 °
Rock Run, Sunday, 25 October
Partly cloudy. High 56°, low 34°.
Pressure30.33 inHg
Wind6.2 mph N
Humidity40%
Visibility—
Dew point24°
Mon, 2662° / 50°0.03
62 °
Rock Run, Monday, 26 October
Light rain. High 62°, low 50°.
Pressure29.83 inHg
Wind12.3 mph N
Humidity75%
Visibility—
Dew point48°
Tue, 2757° / 46°0
57 °
Rock Run, Tuesday, 27 October
Clear. High 57°, low 46°.
Pressure30.03 inHg
Wind11.7 mph N
Humidity60%
Visibility—
Dew point38°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 2861° / 49°0.13
61 °
Rock Run, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high61°
Average low49°
Average precipitation0.13 in
Chance of precipitation22%
Record high82° (2023)
Record low32° (1976)
Thu, 2959° / 47°0.25
59 °
Rock Run, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high59°
Average low47°
Average precipitation0.25 in
Chance of precipitation25%
Record high76° (1984)
Record low33° (1965)
Fri, 3059° / 46°0.1
59 °
Rock Run, Friday, 30 October
Climate normal for this date — 60-year average.
Average high59°
Average low46°
Average precipitation0.1 in
Chance of precipitation27%
Record high76° (2016)
Record low34° (2011)
Sat, 3160° / 47°0.06
60 °
Rock Run, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high60°
Average low47°
Average precipitation0.06 in
Chance of precipitation22%
Record high75° (2024)
Record low35° (2011)
Sun, 0161° / 49°0.09
61 °
Rock Run, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high61°
Average low49°
Average precipitation0.09 in
Chance of precipitation22%
Record high78° (2024)
Record low38° (2002)
Mon, 0261° / 48°0.1
61 °
Rock Run, Monday, 2 November
Climate normal for this date — 60-year average.
Average high61°
Average low48°
Average precipitation0.1 in
Chance of precipitation30%
Record high76° (1971)
Record low35° (2002)
Tue, 0360° / 47°0.08
60 °
Rock Run, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high60°
Average low47°
Average precipitation0.08 in
Chance of precipitation22%
Record high73° (2003)
Record low35° (1996)
Wed, 0458° / 46°0.08
58 °
Rock Run, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high58°
Average low46°
Average precipitation0.08 in
Chance of precipitation17%
Record high75° (1974)
Record low33° (2006)
Thu, 0558° / 46°0.11
58 °
Rock Run, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high58°
Average low46°
Average precipitation0.11 in
Chance of precipitation27%
Record high74° (2022)
Record low30° (1991)
Fri, 0657° / 45°0.07
57 °
Rock Run, Friday, 6 November
Climate normal for this date — 60-year average.
Average high57°
Average low45°
Average precipitation0.07 in
Chance of precipitation25%
Record high78° (2024)
Record low31° (1991)
Sat, 0757° / 45°0.07
57 °
Rock Run, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high57°
Average low45°
Average precipitation0.07 in
Chance of precipitation22%
Record high77° (2024)
Record low31° (1962)
Sun, 0856° / 44°0.15
56 °
Rock Run, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high56°
Average low44°
Average precipitation0.15 in
Chance of precipitation20%
Record high72° (1975)
Record low31° (1967)
Mon, 0956° / 44°0.09
56 °
Rock Run, Monday, 9 November
Climate normal for this date — 60-year average.
Average high56°
Average low44°
Average precipitation0.09 in
Chance of precipitation25%
Record high73° (1975)
Record low29° (1976)
Tue, 1057° / 44°0.15
57 °
Rock Run, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high57°
Average low44°
Average precipitation0.15 in
Chance of precipitation32%
Record high70° (1999)
Record low31° (2017)
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 Rock Run, MD 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 Rock Run, MD 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.