Monthly outlook for Thiells, NY: average high 80.3°, average low 62.5°. That is 0° above 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 9 August (88.6°), the coolest 22 August (53.5°).
80.3°/62.5°
Average high / low
+0°
Above 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
82.5°
81°
+0.8°
18 August – 27 August
76.6°
79.1°
-1.4°
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 (7 mi).
Sun, 0989° / 71°0
89 °
Thiells, Sunday, 9 August
Clear. High 89°, low 71°.
Pressure29.97 inHg
Wind8.3 mph NW
Humidity48%
Visibility6.2 mi
Dew point65°
Mon, 1087° / 69°0
87 °
Thiells, Monday, 10 August
Partly cloudy. High 87°, low 69°.
Pressure29.97 inHg
Wind6 mph W
Humidity42%
Visibility6.2 mi
Dew point61°
Tue, 1188° / 71°0
88 °
Thiells, Tuesday, 11 August
Overcast. High 88°, low 71°.
Pressure29.88 inHg
Wind9.6 mph NW
Humidity38%
Visibility6.2 mi
Dew point56°
Wed, 1278° / 67°0.24
78 °
Thiells, Wednesday, 12 August
Rain. High 78°, low 67°.
Pressure29.71 inHg
Wind5.2 mph NW
Humidity73%
Visibility6.2 mi
Dew point67°
Thu, 1382° / 61°0.1
82 °
Thiells, Thursday, 13 August
Light rain. High 82°, low 61°.
Pressure29.74 inHg
Wind12 mph NW
Humidity39%
Visibility—
Dew point53°
Fri, 1476° / 57°0
76 °
Thiells, Friday, 14 August
Clear. High 76°, low 57°.
Pressure29.97 inHg
Wind9.4 mph NW
Humidity36%
Visibility—
Dew point45°
Sat, 1579° / 57°0
79 °
Thiells, Saturday, 15 August
Clear. High 79°, low 57°.
Pressure30.09 inHg
Wind11.5 mph NW
Humidity36%
Visibility—
Dew point47°
Sun, 1678° / 55°0
78 °
Thiells, Sunday, 16 August
Overcast. High 78°, low 55°.
Pressure30.15 inHg
Wind5.3 mph NW
Humidity32%
Visibility—
Dew point44°
Mon, 1782° / 59°0.19
82 °
Thiells, Monday, 17 August
Light rain. High 82°, low 59°.
Pressure30.12 inHg
Wind11.5 mph SW
Humidity39%
Visibility—
Dew point52°
Tue, 1873° / 65°0.06
73 °
Thiells, Tuesday, 18 August
Light rain. High 73°, low 65°.
Pressure30.09 inHg
Wind7 mph SW
Humidity71%
Visibility—
Dew point61°
Wed, 1978° / 66°0.02
78 °
Thiells, Wednesday, 19 August
Light rain. High 78°, low 66°.
Pressure29.97 inHg
Wind9 mph S
Humidity65%
Visibility—
Dew point61°
Thu, 2081° / 62°1
81 °
Thiells, Thursday, 20 August
Rain. High 81°, low 62°.
Pressure29.65 inHg
Wind12.3 mph NW
Humidity69%
Visibility—
Dew point63°
Fri, 2176° / 59°0
76 °
Thiells, Friday, 21 August
Partly cloudy. High 76°, low 59°.
Pressure29.80 inHg
Wind14.2 mph NW
Humidity52%
Visibility—
Dew point51°
Sat, 2277° / 53°0
77 °
Thiells, Saturday, 22 August
Clear. High 77°, low 53°.
Pressure30.06 inHg
Wind7.8 mph NW
Humidity35%
Visibility—
Dew point39°
Sun, 2375° / 57°0
75 °
Thiells, Sunday, 23 August
Overcast. High 75°, low 57°.
Pressure30.06 inHg
Wind9.8 mph S
Humidity67%
Visibility—
Dew point54°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2478° / 63°0.08
78 °
Thiells, 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 °
Thiells, 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 °
Thiells, 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 °
Thiells, 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 °
Thiells, 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 °
Thiells, 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 °
Thiells, 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 °
Thiells, 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 °
Thiells, 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 °
Thiells, 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 °
Thiells, 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 °
Thiells, 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 °
Thiells, 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 °
Thiells, 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 Thiells, 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 Thiells, 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.