Monthly outlook for Mount Horeb, NJ: average high 82.5°, average low 65.5°. That is 0° below the climate normal for August. Precipitation is expected on 5 days (about 1.6 inches), against a normal of 6 days and 2.3 inches. The warmest day looks like 11 August (91.4°), the coolest 22 August (57.7°).
82.5°/65.5°
Average high / low
−0°
Below normal
5 / 6
Wet days / normal
1.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
85.1°
83.4°
+1°
18 August – 27 August
78.1°
81.6°
-2°
28 August – 6 September
at normal
80.5°
—
August records over 66 years
100.9°9 August 2001All-time high
47.1°30 August 1986All-time low
Climate normals and records are computed from the nearest reference point — East Franklin (10 mi).
Sun, 0990° / 72°0.05
90 °
Mount Horeb, Sunday, 9 August
Light rain. High 90°, low 72°.
Pressure30.00 inHg
Wind7.6 mph W
Humidity45%
Visibility6.2 mi
Dew point65°
Mon, 1091° / 72°0
91 °
Mount Horeb, Monday, 10 August
Clear. High 91°, low 72°.
Pressure29.97 inHg
Wind7.4 mph W
Humidity39%
Visibility6.2 mi
Dew point61°
Tue, 1191° / 73°0
91 °
Mount Horeb, Tuesday, 11 August
Overcast. High 91°, low 73°.
Pressure29.88 inHg
Wind6.5 mph W
Humidity42%
Visibility6.2 mi
Dew point61°
Wed, 1284° / 72°0.05
84 °
Mount Horeb, Wednesday, 12 August
Light rain. High 84°, low 72°.
Pressure29.71 inHg
Wind8.4 mph W
Humidity63%
Visibility6.2 mi
Dew point66°
Thu, 1385° / 67°0.03
85 °
Mount Horeb, Thursday, 13 August
Light rain. High 85°, low 67°.
Pressure29.77 inHg
Wind12.3 mph NW
Humidity35%
Visibility—
Dew point53°
Fri, 1479° / 60°0
79 °
Mount Horeb, Friday, 14 August
Clear. High 79°, low 60°.
Pressure30.00 inHg
Wind8 mph W
Humidity29%
Visibility—
Dew point41°
Sat, 1581° / 62°0
81 °
Mount Horeb, Saturday, 15 August
Clear. High 81°, low 62°.
Pressure30.09 inHg
Wind10.8 mph NW
Humidity30%
Visibility—
Dew point44°
Sun, 1682° / 60°0
82 °
Mount Horeb, Sunday, 16 August
Partly cloudy. High 82°, low 60°.
Pressure30.15 inHg
Wind7.1 mph NW
Humidity25%
Visibility—
Dew point40°
Mon, 1783° / 61°0.09
83 °
Mount Horeb, Monday, 17 August
Light rain. High 83°, low 61°.
Pressure30.09 inHg
Wind7.2 mph S
Humidity40%
Visibility—
Dew point54°
Tue, 1872° / 65°0.16
72 °
Mount Horeb, Tuesday, 18 August
Light rain. High 72°, low 65°.
Pressure30.09 inHg
Wind5.4 mph S
Humidity81%
Visibility—
Dew point62°
Wed, 1979° / 67°0.01
79 °
Mount Horeb, Wednesday, 19 August
Light rain. High 79°, low 67°.
Pressure29.94 inHg
Wind7.3 mph S
Humidity77%
Visibility—
Dew point62°
Thu, 2080° / 66°1.2
80 °
Mount Horeb, Thursday, 20 August
Heavy rain. High 80°, low 66°.
Pressure29.62 inHg
Wind12.5 mph W
Humidity42%
Visibility—
Dew point54°
Fri, 2179° / 63°0
79 °
Mount Horeb, Friday, 21 August
Clear. High 79°, low 63°.
Pressure29.83 inHg
Wind11.2 mph NW
Humidity33%
Visibility—
Dew point45°
Sat, 2279° / 58°0
79 °
Mount Horeb, Saturday, 22 August
Clear. High 79°, low 58°.
Pressure30.03 inHg
Wind6.6 mph W
Humidity26%
Visibility—
Dew point39°
Sun, 2379° / 60°0.01
79 °
Mount Horeb, Sunday, 23 August
Light rain. High 79°, low 60°.
Pressure30.00 inHg
Wind8.5 mph SW
Humidity61%
Visibility—
Dew point63°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2481° / 64°0.06
81 °
Mount Horeb, Monday, 24 August
Climate normal for this date — 60-year average.
Average high81°
Average low64°
Average precipitation0.06 in
Chance of precipitation22%
Record high93° (1998)
Record low53° (1971)
Tue, 2582° / 64°0.07
82 °
Mount Horeb, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high82°
Average low64°
Average precipitation0.07 in
Chance of precipitation22%
Record high97° (1968)
Record low53° (1971)
Wed, 2682° / 65°0.08
82 °
Mount Horeb, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.08 in
Chance of precipitation25%
Record high93° (1993)
Record low55° (1960)
Thu, 2783° / 66°0.15
83 °
Mount Horeb, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high83°
Average low66°
Average precipitation0.15 in
Chance of precipitation35%
Record high94° (2020)
Record low57° (2017)
Fri, 2882° / 67°0.22
82 °
Mount Horeb, Friday, 28 August
Climate normal for this date — 60-year average.
Average high82°
Average low67°
Average precipitation0.22 in
Chance of precipitation43%
Record high96° (1973)
Record low56° (1986)
Sat, 2981° / 66°0.13
81 °
Mount Horeb, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high81°
Average low66°
Average precipitation0.13 in
Chance of precipitation32%
Record high94° (2010)
Record low49° (1986)
Sun, 3082° / 65°0.07
82 °
Mount Horeb, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.07 in
Chance of precipitation28%
Record high96° (1973)
Record low47° (1986)
Mon, 3181° / 65°0.07
81 °
Mount Horeb, Monday, 31 August
Climate normal for this date — 60-year average.
Average high81°
Average low65°
Average precipitation0.07 in
Chance of precipitation18%
Record high96° (1973)
Record low50° (1976)
Tue, 0180° / 64°0.13
80 °
Mount Horeb, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.13 in
Chance of precipitation32%
Record high94° (2010)
Record low53° (2017)
Wed, 0280° / 63°0.15
80 °
Mount Horeb, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.15 in
Chance of precipitation32%
Record high96° (1980)
Record low52° (2017)
Thu, 0380° / 64°0.13
80 °
Mount Horeb, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.13 in
Chance of precipitation35%
Record high93° (2015)
Record low49° (1967)
Fri, 0480° / 64°0.09
80 °
Mount Horeb, Friday, 4 September
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.09 in
Chance of precipitation28%
Record high93° (2023)
Record low52° (2024)
Sat, 0580° / 64°0.06
80 °
Mount Horeb, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.06 in
Chance of precipitation18%
Record high96° (2023)
Record low53° (1997)
Sun, 0679° / 63°0.2
79 °
Mount Horeb, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high79°
Average low63°
Average precipitation0.2 in
Chance of precipitation33%
Record high96° (2023)
Record low51° (1984)
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 Mount Horeb, NJ 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 Mount Horeb, NJ 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.