Monthly outlook for Mariandale, NY: average high 82.3°, average low 65.1°. That is 1.2° above the climate normal for August. Precipitation is expected on 5 days (about 1.7 inches), against a normal of 6 days and 2.3 inches. The warmest day looks like 9 August (90.4°), the coolest 22 August (56.7°).
82.3°/65.1°
Average high / low
+1.2°
Above normal
5 / 6
Wet days / normal
1.7 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
84.5°
81°
+1.9°
18 August – 27 August
78.7°
79.1°
-0.2°
28 August – 6 September
at normal
77.9°
—
August records over 66 years
99.7°2 August 2006All-time high
48°29 August 1982All-time low
Climate normals and records are computed from the nearest reference point — Ramapo (13 mi).
Sun, 0990° / 73°0
90 °
Mariandale, Sunday, 9 August
Clear. High 90°, low 73°.
Pressure29.97 inHg
Wind8.5 mph NW
Humidity46%
Visibility6.2 mi
Dew point65°
Mon, 1090° / 71°0
90 °
Mariandale, Monday, 10 August
Mostly clear. High 90°, low 71°.
Pressure29.97 inHg
Wind6 mph W
Humidity39%
Visibility6.2 mi
Dew point60°
Tue, 1190° / 73°0
90 °
Mariandale, Tuesday, 11 August
Overcast. High 90°, low 73°.
Pressure29.85 inHg
Wind9.8 mph NW
Humidity36%
Visibility6.2 mi
Dew point56°
Wed, 1280° / 69°0.24
80 °
Mariandale, Wednesday, 12 August
Rain. High 80°, low 69°.
Pressure29.71 inHg
Wind5.4 mph NW
Humidity68%
Visibility6.2 mi
Dew point67°
Thu, 1384° / 65°0.1
84 °
Mariandale, Thursday, 13 August
Light rain. High 84°, low 65°.
Pressure29.74 inHg
Wind12.2 mph NW
Humidity37%
Visibility—
Dew point53°
Fri, 1478° / 60°0
78 °
Mariandale, Friday, 14 August
Clear. High 78°, low 60°.
Pressure29.97 inHg
Wind9.4 mph NW
Humidity34%
Visibility—
Dew point45°
Sat, 1581° / 59°0
81 °
Mariandale, Saturday, 15 August
Clear. High 81°, low 59°.
Pressure30.06 inHg
Wind11 mph NW
Humidity34%
Visibility—
Dew point47°
Sun, 1680° / 58°0
80 °
Mariandale, Sunday, 16 August
Overcast. High 80°, low 58°.
Pressure30.21 inHg
Wind5.6 mph NW
Humidity38%
Visibility—
Dew point46°
Mon, 1784° / 62°0.15
84 °
Mariandale, Monday, 17 August
Light rain. High 84°, low 62°.
Pressure30.15 inHg
Wind12.1 mph S
Humidity48%
Visibility—
Dew point53°
Tue, 1875° / 67°0.07
75 °
Mariandale, Tuesday, 18 August
Light rain. High 75°, low 67°.
Pressure30.15 inHg
Wind6.9 mph SW
Humidity89%
Visibility—
Dew point65°
Wed, 1979° / 68°0.01
79 °
Mariandale, Wednesday, 19 August
Light rain. High 79°, low 68°.
Pressure29.97 inHg
Wind8.9 mph S
Humidity61%
Visibility—
Dew point62°
Thu, 2083° / 65°1.05
83 °
Mariandale, Thursday, 20 August
Heavy rain. High 83°, low 65°.
Pressure29.65 inHg
Wind11.6 mph NW
Humidity70%
Visibility—
Dew point65°
Fri, 2178° / 62°0
78 °
Mariandale, Friday, 21 August
Partly cloudy. High 78°, low 62°.
Pressure29.80 inHg
Wind13.8 mph NW
Humidity51%
Visibility—
Dew point52°
Sat, 2279° / 57°0
79 °
Mariandale, Saturday, 22 August
Clear. High 79°, low 57°.
Pressure30.06 inHg
Wind7 mph NW
Humidity34%
Visibility—
Dew point40°
Sun, 2377° / 60°0
77 °
Mariandale, Sunday, 23 August
Overcast. High 77°, low 60°.
Pressure30.06 inHg
Wind10.8 mph S
Humidity61%
Visibility—
Dew point55°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2478° / 63°0.08
78 °
Mariandale, Monday, 24 August
Climate normal for this date — 60-year average.
Average high78°
Average low63°
Average precipitation0.08 in
Chance of precipitation27%
Record high93° (1998)
Record low51° (1971)
Tue, 2580° / 63°0.09
80 °
Mariandale, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.09 in
Chance of precipitation25%
Record high93° (1968)
Record low52° (1971)
Wed, 2680° / 63°0.07
80 °
Mariandale, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.07 in
Chance of precipitation23%
Record high90° (1993)
Record low53° (2019)
Thu, 2780° / 65°0.2
80 °
Mariandale, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high80°
Average low65°
Average precipitation0.2 in
Chance of precipitation40%
Record high92° (1993)
Record low54° (1969)
Fri, 2880° / 65°0.24
80 °
Mariandale, Friday, 28 August
Climate normal for this date — 60-year average.
Average high80°
Average low65°
Average precipitation0.24 in
Chance of precipitation38%
Record high92° (1973)
Record low55° (1986)
Sat, 2979° / 64°0.15
79 °
Mariandale, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high79°
Average low64°
Average precipitation0.15 in
Chance of precipitation37%
Record high90° (1973)
Record low48° (1982)
Sun, 3079° / 64°0.07
79 °
Mariandale, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high79°
Average low64°
Average precipitation0.07 in
Chance of precipitation28%
Record high92° (1973)
Record low49° (1986)
Mon, 3178° / 63°0.06
78 °
Mariandale, Monday, 31 August
Climate normal for this date — 60-year average.
Average high78°
Average low63°
Average precipitation0.06 in
Chance of precipitation23%
Record high92° (2010)
Record low50° (1965)
Tue, 0177° / 62°0.13
77 °
Mariandale, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high77°
Average low62°
Average precipitation0.13 in
Chance of precipitation32%
Record high92° (2010)
Record low50° (2017)
Wed, 0277° / 62°0.15
77 °
Mariandale, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high77°
Average low62°
Average precipitation0.15 in
Chance of precipitation33%
Record high94° (2010)
Record low49° (2017)
Thu, 0378° / 62°0.11
78 °
Mariandale, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high78°
Average low62°
Average precipitation0.11 in
Chance of precipitation32%
Record high91° (2015)
Record low50° (1967)
Fri, 0478° / 62°0.14
78 °
Mariandale, Friday, 4 September
Climate normal for this date — 60-year average.
Average high78°
Average low62°
Average precipitation0.14 in
Chance of precipitation30%
Record high90° (1973)
Record low51° (1997)
Sat, 0577° / 62°0.08
77 °
Mariandale, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high77°
Average low62°
Average precipitation0.08 in
Chance of precipitation27%
Record high90° (2023)
Record low51° (2000)
Sun, 0676° / 62°0.25
76 °
Mariandale, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high76°
Average low62°
Average precipitation0.25 in
Chance of precipitation30%
Record high91° (1998)
Record low50° (2000)
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 Mariandale, NY 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 Mariandale, NY 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.