Monthly outlook for Guilderland, NY: average high 78.2°, average low 59.9°. That is 0.3° below the climate normal for August. Precipitation is expected on 6 days (about 1.2 inches), against a normal of 6 days and 2.2 inches. The warmest day looks like 10 August (87.9°), the coolest 16 August (51.2°).
78.2°/59.9°
Average high / low
−0.3°
Below normal
6 / 6
Wet days / normal
1.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
79.8°
79.6°
+0.2°
18 August – 27 August
75.6°
77.5°
-1°
28 August – 6 September
at normal
76.1°
—
August records over 66 years
98.6°4 August 2022All-time high
44.6°30 August 1965All-time low
Climate normals and records are computed from the nearest reference point — Schenectady (7 mi).
Sun, 0984° / 69°0
84 °
Guilderland, Sunday, 9 August
Clear. High 84°, low 69°.
Pressure29.97 inHg
Wind10.9 mph NW
Humidity53%
Visibility6.2 mi
Dew point63°
Mon, 1088° / 65°0.05
88 °
Guilderland, Monday, 10 August
Light rain. High 88°, low 65°.
Pressure29.94 inHg
Wind3.1 mph S
Humidity49%
Visibility6.2 mi
Dew point61°
Tue, 1184° / 69°0
84 °
Guilderland, Tuesday, 11 August
Partly cloudy. High 84°, low 69°.
Pressure29.88 inHg
Wind11.1 mph NW
Humidity49%
Visibility6.2 mi
Dew point59°
Wed, 1281° / 66°0.29
81 °
Guilderland, Wednesday, 12 August
Rain. High 81°, low 66°.
Pressure29.77 inHg
Wind2.2 mph E
Humidity72%
Visibility6.2 mi
Dew point65°
Thu, 1378° / 57°0.09
78 °
Guilderland, Thursday, 13 August
Light rain. High 78°, low 57°.
Pressure29.77 inHg
Wind16.1 mph NW
Humidity58%
Visibility—
Dew point56°
Fri, 1471° / 53°0
71 °
Guilderland, Friday, 14 August
Mostly clear. High 71°, low 53°.
Pressure29.94 inHg
Wind11.4 mph NW
Humidity45%
Visibility—
Dew point47°
Sat, 1574° / 51°0
74 °
Guilderland, Saturday, 15 August
Mostly clear. High 74°, low 51°.
Pressure30.12 inHg
Wind8.5 mph NW
Humidity37%
Visibility—
Dew point44°
Sun, 1677° / 51°0
77 °
Guilderland, Sunday, 16 August
Partly cloudy. High 77°, low 51°.
Pressure30.27 inHg
Wind4.9 mph W
Humidity35%
Visibility—
Dew point45°
Mon, 1776° / 55°0
76 °
Guilderland, Monday, 17 August
Overcast. High 76°, low 55°.
Pressure30.12 inHg
Wind6.2 mph S
Humidity55%
Visibility—
Dew point56°
Tue, 1879° / 64°0.16
79 °
Guilderland, Tuesday, 18 August
Light rain. High 79°, low 64°.
Pressure29.97 inHg
Wind5.6 mph S
Humidity85%
Visibility—
Dew point65°
Wed, 1975° / 61°0.12
75 °
Guilderland, Wednesday, 19 August
Light rain. High 75°, low 61°.
Pressure29.91 inHg
Wind5 mph N
Humidity78%
Visibility—
Dew point62°
Thu, 2079° / 57°0
79 °
Guilderland, Thursday, 20 August
Overcast. High 79°, low 57°.
Pressure30.00 inHg
Wind4.3 mph N
Humidity57%
Visibility—
Dew point54°
Fri, 2172° / 59°0.43
72 °
Guilderland, Friday, 21 August
Rain. High 72°, low 59°.
Pressure29.94 inHg
Wind8.4 mph S
Humidity74%
Visibility—
Dew point61°
Sat, 2280° / 60°0
80 °
Guilderland, Saturday, 22 August
Light rain. High 80°, low 60°.
Pressure29.80 inHg
Wind12.5 mph W
Humidity73%
Visibility—
Dew point62°
Sun, 2369° / 52°0.01
69 °
Guilderland, Sunday, 23 August
Light rain. High 69°, low 52°.
Pressure29.94 inHg
Wind16.5 mph W
Humidity57%
Visibility—
Dew point44°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2476° / 60°0.12
76 °
Guilderland, Monday, 24 August
Climate normal for this date — 60-year average.
Average high76°
Average low60°
Average precipitation0.12 in
Chance of precipitation30%
Record high89° (2020)
Record low47° (1971)
Tue, 2578° / 60°0.1
78 °
Guilderland, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high78°
Average low60°
Average precipitation0.1 in
Chance of precipitation37%
Record high95° (2007)
Record low47° (1971)
Wed, 2678° / 60°0.06
78 °
Guilderland, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high78°
Average low60°
Average precipitation0.06 in
Chance of precipitation25%
Record high89° (2021)
Record low49° (1977)
Thu, 2778° / 61°0.2
78 °
Guilderland, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high78°
Average low61°
Average precipitation0.2 in
Chance of precipitation45%
Record high91° (1993)
Record low50° (1989)
Fri, 2878° / 61°0.23
78 °
Guilderland, Friday, 28 August
Climate normal for this date — 60-year average.
Average high78°
Average low61°
Average precipitation0.23 in
Chance of precipitation42%
Record high93° (2018)
Record low50° (2025)
Sat, 2977° / 61°0.18
77 °
Guilderland, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high77°
Average low61°
Average precipitation0.18 in
Chance of precipitation40%
Record high93° (2018)
Record low45° (1982)
Sun, 3077° / 60°0.1
77 °
Guilderland, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high77°
Average low60°
Average precipitation0.1 in
Chance of precipitation32%
Record high91° (1973)
Record low45° (1965)
Mon, 3176° / 60°0.11
76 °
Guilderland, Monday, 31 August
Climate normal for this date — 60-year average.
Average high76°
Average low60°
Average precipitation0.11 in
Chance of precipitation37%
Record high91° (1973)
Record low46° (1965)
Tue, 0175° / 59°0.07
75 °
Guilderland, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high75°
Average low59°
Average precipitation0.07 in
Chance of precipitation28%
Record high91° (2010)
Record low48° (1967)
Wed, 0276° / 58°0.13
76 °
Guilderland, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high76°
Average low58°
Average precipitation0.13 in
Chance of precipitation37%
Record high91° (2010)
Record low45° (2017)
Thu, 0376° / 59°0.12
76 °
Guilderland, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high76°
Average low59°
Average precipitation0.12 in
Chance of precipitation30%
Record high91° (2018)
Record low47° (1976)
Fri, 0476° / 59°0.09
76 °
Guilderland, Friday, 4 September
Climate normal for this date — 60-year average.
Average high76°
Average low59°
Average precipitation0.09 in
Chance of precipitation28%
Record high91° (1999)
Record low47° (1987)
Sat, 0575° / 59°0.07
75 °
Guilderland, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high75°
Average low59°
Average precipitation0.07 in
Chance of precipitation20%
Record high90° (1973)
Record low47° (1963)
Sun, 0675° / 58°0.14
75 °
Guilderland, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high75°
Average low58°
Average precipitation0.14 in
Chance of precipitation30%
Record high90° (2023)
Record low46° (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 Guilderland, 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 Guilderland, 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.