Monthly outlook for Costen, MD: average high 70.1°, average low 54.9°. That is 2.9° above the climate normal for October. Precipitation is expected on 4 days (about 1.5 inches), against a normal of 4 days and 1.8 inches. The warmest day looks like 16 October (81.5°), the coolest 18 October (42.6°).
70.1°/54.9°
Average high / low
+2.9°
Above normal
4 / 4
Wet days / normal
1.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
15 October – 24 October
69.6°
65.9°
+2.1°
25 October – 3 November
70.9°
63.2°
+4.3°
4 November – 13 November
at normal
59.1°
—
October records over 66 years
92.5°2 October 2019All-time high
32.9°24 October 1969All-time low
Climate normals and records are computed from the nearest reference point — Princess Anne (8 mi).
Fri, 1682° / 60°0
82 °
Costen, Friday, 16 October
Clear. High 82°, low 60°.
Pressure29.88 inHg
Wind10.2 mph SW
Humidity76%
Visibility6.2 mi
Dew point68°
Sat, 1769° / 48°0.23
69 °
Costen, Saturday, 17 October
Rain. High 69°, low 48°.
Pressure30.09 inHg
Wind14.2 mph N
Humidity62%
Visibility6.2 mi
Dew point43°
Sun, 1859° / 43°0
59 °
Costen, Sunday, 18 October
Clear. High 59°, low 43°.
Pressure30.56 inHg
Wind8.8 mph NE
Humidity52%
Visibility6.2 mi
Dew point38°
Mon, 1965° / 44°0
65 °
Costen, Monday, 19 October
Clear. High 65°, low 44°.
Pressure30.50 inHg
Wind7.1 mph NE
Humidity60%
Visibility—
Dew point44°
Tue, 2069° / 46°0
69 °
Costen, Tuesday, 20 October
Clear. High 69°, low 46°.
Pressure30.27 inHg
Wind7.3 mph N
Humidity52%
Visibility—
Dew point42°
Wed, 2171° / 55°0
71 °
Costen, Wednesday, 21 October
Overcast. High 71°, low 55°.
Pressure30.39 inHg
Wind10.5 mph E
Humidity52%
Visibility—
Dew point47°
Thu, 2268° / 53°0
68 °
Costen, Thursday, 22 October
Partly cloudy. High 68°, low 53°.
Pressure30.45 inHg
Wind11.1 mph E
Humidity51%
Visibility—
Dew point46°
Fri, 2368° / 52°0
68 °
Costen, Friday, 23 October
Clear. High 68°, low 52°.
Pressure30.42 inHg
Wind5.1 mph SE
Humidity52%
Visibility—
Dew point45°
Sat, 2471° / 54°0
71 °
Costen, Saturday, 24 October
Mostly clear. High 71°, low 54°.
Pressure30.45 inHg
Wind8.6 mph SE
Humidity50%
Visibility—
Dew point46°
Sun, 2573° / 57°0
73 °
Costen, Sunday, 25 October
Clear. High 73°, low 57°.
Pressure30.42 inHg
Wind9.1 mph SE
Humidity61%
Visibility—
Dew point54°
Mon, 2675° / 66°0
75 °
Costen, Monday, 26 October
Overcast. High 75°, low 66°.
Pressure30.18 inHg
Wind15.4 mph S
Humidity60%
Visibility—
Dew point57°
Tue, 2773° / 65°0.02
73 °
Costen, Tuesday, 27 October
Light rain. High 73°, low 65°.
Pressure30.12 inHg
Wind5.9 mph S
Humidity67%
Visibility—
Dew point60°
Wed, 2868° / 63°0.65
68 °
Costen, Wednesday, 28 October
Rain. High 68°, low 63°.
Pressure29.97 inHg
Wind22.1 mph SE
Humidity89%
Visibility—
Dew point60°
Thu, 2972° / 60°0.57
72 °
Costen, Thursday, 29 October
Rain. High 72°, low 60°.
Pressure29.65 inHg
Wind16 mph NW
Humidity85%
Visibility—
Dew point63°
Fri, 3065° / 54°0
65 °
Costen, Friday, 30 October
Clear. High 65°, low 54°.
Pressure30.09 inHg
Wind14.4 mph NW
Humidity57%
Visibility—
Dew point46°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 3163° / 50°0.06
63 °
Costen, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high63°
Average low50°
Average precipitation0.06 in
Chance of precipitation17%
Record high78° (2019)
Record low36° (1975)
Sun, 0164° / 51°0.12
64 °
Costen, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high64°
Average low51°
Average precipitation0.12 in
Chance of precipitation27%
Record high76° (2024)
Record low39° (1975)
Mon, 0263° / 51°0.1
63 °
Costen, Monday, 2 November
Climate normal for this date — 60-year average.
Average high63°
Average low51°
Average precipitation0.1 in
Chance of precipitation27%
Record high77° (1971)
Record low36° (2023)
Tue, 0363° / 50°0.08
63 °
Costen, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high63°
Average low50°
Average precipitation0.08 in
Chance of precipitation25%
Record high76° (2016)
Record low37° (1980)
Wed, 0461° / 49°0.09
61 °
Costen, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high61°
Average low49°
Average precipitation0.09 in
Chance of precipitation32%
Record high76° (2003)
Record low35° (2006)
Thu, 0561° / 49°0.1
61 °
Costen, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high61°
Average low49°
Average precipitation0.1 in
Chance of precipitation32%
Record high78° (2022)
Record low33° (2006)
Fri, 0660° / 48°0.09
60 °
Costen, Friday, 6 November
Climate normal for this date — 60-year average.
Average high60°
Average low48°
Average precipitation0.09 in
Chance of precipitation27%
Record high78° (2022)
Record low34° (2012)
Sat, 0760° / 47°0.07
60 °
Costen, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high60°
Average low47°
Average precipitation0.07 in
Chance of precipitation22%
Record high80° (2024)
Record low33° (1962)
Sun, 0859° / 46°0.08
59 °
Costen, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high59°
Average low46°
Average precipitation0.08 in
Chance of precipitation27%
Record high73° (1986)
Record low32° (1960)
Mon, 0959° / 46°0.07
59 °
Costen, Monday, 9 November
Climate normal for this date — 60-year average.
Average high59°
Average low46°
Average precipitation0.07 in
Chance of precipitation25%
Record high76° (1986)
Record low28° (2019)
Tue, 1060° / 47°0.11
60 °
Costen, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high60°
Average low47°
Average precipitation0.11 in
Chance of precipitation32%
Record high75° (2020)
Record low34° (2017)
Wed, 1158° / 47°0.13
58 °
Costen, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high58°
Average low47°
Average precipitation0.13 in
Chance of precipitation30%
Record high76° (2020)
Record low24° (2017)
Thu, 1257° / 45°0.24
57 °
Costen, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high57°
Average low45°
Average precipitation0.24 in
Chance of precipitation38%
Record high73° (2022)
Record low29° (2017)
Fri, 1356° / 44°0.16
56 °
Costen, Friday, 13 November
Climate normal for this date — 60-year average.
Average high56°
Average low44°
Average precipitation0.16 in
Chance of precipitation27%
Record high69° (1985)
Record low26° (2019)
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 Costen, 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 Costen, 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.