Monthly outlook for Riverside, MD: average high 66.5°, average low 51°. That is 0.9° above the climate normal for October. Precipitation is expected on 4 days (about 1.2 inches), against a normal of 4 days and 1.8 inches. The warmest day looks like 8 October (77.3°), the coolest 18 October (37.7°).
66.5°/51°
Average high / low
+0.9°
Above normal
4 / 4
Wet days / normal
1.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 October – 17 October
69.3°
66.1°
+1.7°
18 October – 27 October
61.9°
62.3°
-0.2°
28 October – 6 November
at normal
59.5°
—
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 (6 mi).
Fri, 0975° / 46°0
75 °
Riverside, Friday, 9 October
Clear. High 75°, low 46°.
Pressure30.21 inHg
Wind10.7 mph W
Humidity38%
Visibility6.2 mi
Dew point44°
Sat, 1071° / 48°0
71 °
Riverside, Saturday, 10 October
Overcast. High 71°, low 48°.
Pressure30.45 inHg
Wind7.8 mph E
Humidity43%
Visibility6.2 mi
Dew point45°
Sun, 1163° / 58°0.65
63 °
Riverside, Sunday, 11 October
Rain. High 63°, low 58°.
Pressure30.27 inHg
Wind10.6 mph E
Humidity98%
Visibility1.5 mi
Dew point60°
Mon, 1270° / 61°0.39
70 °
Riverside, Monday, 12 October
Rain. High 70°, low 61°.
Pressure29.77 inHg
Wind10.6 mph N
Humidity87%
Visibility6.2 mi
Dew point61°
Tue, 1377° / 60°0.07
77 °
Riverside, Tuesday, 13 October
Light rain. High 77°, low 60°.
Pressure29.83 inHg
Wind8.9 mph W
Humidity66%
Visibility—
Dew point59°
Wed, 1462° / 50°0
62 °
Riverside, Wednesday, 14 October
Clear. High 62°, low 50°.
Pressure30.06 inHg
Wind11.3 mph N
Humidity54%
Visibility—
Dew point40°
Thu, 1558° / 46°0
58 °
Riverside, Thursday, 15 October
Overcast. High 58°, low 46°.
Pressure30.33 inHg
Wind5.6 mph N
Humidity48%
Visibility—
Dew point33°
Fri, 1670° / 56°0
70 °
Riverside, Friday, 16 October
Partly cloudy. High 70°, low 56°.
Pressure30.24 inHg
Wind14.6 mph S
Humidity65%
Visibility—
Dew point52°
Sat, 1769° / 43°0
69 °
Riverside, Saturday, 17 October
Partly cloudy. High 69°, low 43°.
Pressure30.27 inHg
Wind20.2 mph N
Humidity53%
Visibility—
Dew point41°
Sun, 1857° / 38°0
57 °
Riverside, Sunday, 18 October
Clear. High 57°, low 38°.
Pressure30.62 inHg
Wind8.8 mph N
Humidity37%
Visibility—
Dew point24°
Mon, 1959° / 45°0
59 °
Riverside, Monday, 19 October
Overcast. High 59°, low 45°.
Pressure30.53 inHg
Wind8 mph S
Humidity42%
Visibility—
Dew point31°
Tue, 2058° / 52°0
58 °
Riverside, Tuesday, 20 October
Overcast. High 58°, low 52°.
Pressure30.33 inHg
Wind5 mph SW
Humidity63%
Visibility—
Dew point43°
Wed, 2157° / 54°0.13
57 °
Riverside, Wednesday, 21 October
Light rain. High 57°, low 54°.
Pressure30.21 inHg
Wind5 mph SW
Humidity70%
Visibility—
Dew point47°
Thu, 2270° / 55°0
70 °
Riverside, Thursday, 22 October
Clear. High 70°, low 55°.
Pressure30.18 inHg
Wind6.4 mph S
Humidity70%
Visibility—
Dew point54°
Fri, 2369° / 51°0.01
69 °
Riverside, Friday, 23 October
Light rain. High 69°, low 51°.
Pressure30.00 inHg
Wind16.6 mph W
Humidity69%
Visibility—
Dew point55°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 2462° / 50°0.11
62 °
Riverside, Saturday, 24 October
Climate normal for this date — 60-year average.
Average high62°
Average low50°
Average precipitation0.11 in
Chance of precipitation32%
Record high76° (2001)
Record low32° (1969)
Sun, 2561° / 49°0.15
61 °
Riverside, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high61°
Average low49°
Average precipitation0.15 in
Chance of precipitation32%
Record high75° (2021)
Record low39° (1962)
Mon, 2661° / 49°0.12
61 °
Riverside, Monday, 26 October
Climate normal for this date — 60-year average.
Average high61°
Average low49°
Average precipitation0.12 in
Chance of precipitation28%
Record high75° (1963)
Record low35° (1962)
Tue, 2761° / 49°0.2
61 °
Riverside, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high61°
Average low49°
Average precipitation0.2 in
Chance of precipitation28%
Record high80° (1963)
Record low34° (1976)
Wed, 2861° / 49°0.13
61 °
Riverside, 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 °
Riverside, 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 °
Riverside, 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 °
Riverside, 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 °
Riverside, 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 °
Riverside, 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 °
Riverside, 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 °
Riverside, 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 °
Riverside, 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 °
Riverside, 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)
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 Riverside, 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 Riverside, 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.