Monthly outlook for Chillum Heights, MD: average high 55.1°, average low 40.7°. That is 1° above the climate normal for November. Precipitation is expected on 2 days (about 1.5 inches), against a normal of 5 days and 1.7 inches. The warmest day looks like 20 November (65.2°), the coolest 25 November (28.3°).
55.1°/40.7°
Average high / low
+1°
Above normal
2 / 5
Wet days / normal
1.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
15 November – 24 November
56.8°
53.7°
+1.7°
25 November – 4 December
52.1°
51.3°
+0.5°
5 December – 14 December
at normal
46.9°
—
November records over 66 years
82.4°1 November 1974All-time high
14.5°24 November 1989All-time low
Climate normals and records are computed from the nearest reference point — Chillum (0 mi).
Mon, 1655° / 42°0
55 °
Chillum Heights, Monday, 16 November
Mostly clear. High 55°, low 42°.
Pressure30.47 inHg
Wind6.2 mph NW
Humidity51%
Visibility6.2 mi
Dew point34°
Tue, 1757° / 37°0
57 °
Chillum Heights, Tuesday, 17 November
Clear. High 57°, low 37°.
Pressure30.56 inHg
Wind4.7 mph NW
Humidity51%
Visibility6.2 mi
Dew point36°
Wed, 1861° / 39°0
61 °
Chillum Heights, Wednesday, 18 November
Clear. High 61°, low 39°.
Pressure30.50 inHg
Wind4.4 mph NW
Humidity41%
Visibility6.2 mi
Dew point36°
Thu, 1964° / 38°0
64 °
Chillum Heights, Thursday, 19 November
Partly cloudy. High 64°, low 38°.
Pressure30.47 inHg
Wind4.7 mph S
Humidity60%
Visibility—
Dew point38°
Fri, 2065° / 45°0
65 °
Chillum Heights, Friday, 20 November
Clear. High 65°, low 45°.
Pressure30.36 inHg
Wind7.9 mph NW
Humidity44%
Visibility—
Dew point35°
Sat, 2162° / 48°0
62 °
Chillum Heights, Saturday, 21 November
Partly cloudy. High 62°, low 48°.
Pressure30.36 inHg
Wind4.7 mph S
Humidity60%
Visibility—
Dew point42°
Sun, 2263° / 47°0
63 °
Chillum Heights, Sunday, 22 November
Overcast. High 63°, low 47°.
Pressure30.15 inHg
Wind8.7 mph NW
Humidity60%
Visibility—
Dew point40°
Mon, 2351° / 39°0
51 °
Chillum Heights, Monday, 23 November
Clear. High 51°, low 39°.
Pressure30.21 inHg
Wind14.4 mph NW
Humidity50%
Visibility—
Dew point28°
Tue, 2439° / 31°0
39 °
Chillum Heights, Tuesday, 24 November
Clear. High 39°, low 31°.
Pressure30.59 inHg
Wind13.7 mph NW
Humidity29%
Visibility—
Dew point8°
Wed, 2543° / 28°0
43 °
Chillum Heights, Wednesday, 25 November
Clear. High 43°, low 28°.
Pressure30.59 inHg
Wind8.5 mph N
Humidity28%
Visibility—
Dew point5°
Thu, 2646° / 34°0
46 °
Chillum Heights, Thursday, 26 November
Overcast. High 46°, low 34°.
Pressure30.56 inHg
Wind5 mph S
Humidity25%
Visibility—
Dew point6°
Fri, 2760° / 41°0.07
60 °
Chillum Heights, Friday, 27 November
Light rain. High 60°, low 41°.
Pressure30.39 inHg
Wind19 mph SE
Humidity80%
Visibility—
Dew point39°
Sat, 2864° / 52°1.38
64 °
Chillum Heights, Saturday, 28 November
Heavy rain. High 64°, low 52°.
Pressure29.74 inHg
Wind24.5 mph SE
Humidity69%
Visibility—
Dew point50°
Sun, 2952° / 47°0
52 °
Chillum Heights, Sunday, 29 November
Partly cloudy. High 52°, low 47°.
Pressure29.88 inHg
Wind12.1 mph SW
Humidity51%
Visibility—
Dew point33°
Mon, 3047° / 41°0
47 °
Chillum Heights, Monday, 30 November
Partly cloudy. High 47°, low 41°.
Pressure30.09 inHg
Wind12.9 mph NW
Humidity58%
Visibility—
Dew point30°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 0150° / 36°0.15
50 °
Chillum Heights, Tuesday, 1 December
Climate normal for this date — 60-year average.
Average high50°
Average low36°
Average precipitation0.15 in
Chance of precipitation35%
Record high73° (2006)
Record low17° (1967)
Wed, 0249° / 35°0.09
49 °
Chillum Heights, Wednesday, 2 December
Climate normal for this date — 60-year average.
Average high49°
Average low35°
Average precipitation0.09 in
Chance of precipitation25%
Record high65° (1970)
Record low15° (1967)
Thu, 0350° / 35°0.09
50 °
Chillum Heights, Thursday, 3 December
Climate normal for this date — 60-year average.
Average high50°
Average low35°
Average precipitation0.09 in
Chance of precipitation22%
Record high70° (1998)
Record low20° (1976)
Fri, 0449° / 35°0.08
49 °
Chillum Heights, Friday, 4 December
Climate normal for this date — 60-year average.
Average high49°
Average low35°
Average precipitation0.08 in
Chance of precipitation23%
Record high73° (1982)
Record low18° (1966)
Sat, 0548° / 35°0.15
48 °
Chillum Heights, Saturday, 5 December
Climate normal for this date — 60-year average.
Average high48°
Average low35°
Average precipitation0.15 in
Chance of precipitation33%
Record high72° (1998)
Record low25° (1966)
Sun, 0648° / 34°0.1
48 °
Chillum Heights, Sunday, 6 December
Climate normal for this date — 60-year average.
Average high48°
Average low34°
Average precipitation0.1 in
Chance of precipitation35%
Record high76° (1998)
Record low15° (2007)
Mon, 0747° / 33°0.12
47 °
Chillum Heights, Monday, 7 December
Climate normal for this date — 60-year average.
Average high47°
Average low33°
Average precipitation0.12 in
Chance of precipitation22%
Record high75° (1998)
Record low6° (2002)
Tue, 0847° / 33°0.07
47 °
Chillum Heights, Tuesday, 8 December
Climate normal for this date — 60-year average.
Average high47°
Average low33°
Average precipitation0.07 in
Chance of precipitation25%
Record high71° (1978)
Record low17° (2003)
Wed, 0947° / 33°0.18
47 °
Chillum Heights, Wednesday, 9 December
Climate normal for this date — 60-year average.
Average high47°
Average low33°
Average precipitation0.18 in
Chance of precipitation38%
Record high69° (1966)
Record low17° (1989)
Thu, 1047° / 34°0.16
47 °
Chillum Heights, Thursday, 10 December
Climate normal for this date — 60-year average.
Average high47°
Average low34°
Average precipitation0.16 in
Chance of precipitation33%
Record high69° (1966)
Record low15° (1989)
Fri, 1147° / 34°0.17
47 °
Chillum Heights, Friday, 11 December
Climate normal for this date — 60-year average.
Average high47°
Average low34°
Average precipitation0.17 in
Chance of precipitation33%
Record high69° (2021)
Record low18° (1968)
Sat, 1246° / 33°0.07
46 °
Chillum Heights, Saturday, 12 December
Climate normal for this date — 60-year average.
Average high46°
Average low33°
Average precipitation0.07 in
Chance of precipitation25%
Record high70° (2015)
Record low12° (1962)
Sun, 1346° / 33°0.12
46 °
Chillum Heights, Sunday, 13 December
Climate normal for this date — 60-year average.
Average high46°
Average low33°
Average precipitation0.12 in
Chance of precipitation28%
Record high71° (2015)
Record low8° (1960)
Mon, 1446° / 33°0.14
46 °
Chillum Heights, Monday, 14 December
Climate normal for this date — 60-year average.
Average high46°
Average low33°
Average precipitation0.14 in
Chance of precipitation35%
Record high70° (2015)
Record low8° (1960)
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 Chillum Heights, 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 Chillum Heights, 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.