Monthly outlook for St. Johnsville, NY: average high 73.9°, average low 54.7°. That is 2.1° below the climate normal for August. Precipitation is expected on 6 days (about 1.4 inches), against a normal of 6 days and 2.0 inches. The warmest day looks like 11 August (81.1°), the coolest 15 August (44.7°).
73.9°/54.7°
Average high / low
−2.1°
Below normal
6 / 6
Wet days / normal
1.4 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
74.3°
78.4°
-2.3°
19 August – 28 August
73.2°
76.7°
-2°
29 August – 7 September
at normal
75.2°
—
August records over 66 years
95.7°9 August 2001All-time high
43.9°25 August 1971All-time low
Climate normals and records are computed from the nearest reference point — Palatine Bridge (8 mi).
Mon, 1077° / 62°0.08
77 °
St. Johnsville, Monday, 10 August
Light rain. High 77°, low 62°.
Pressure29.94 inHg
Wind5.1 mph W
Humidity59%
Visibility6.2 mi
Dew point62°
Tue, 1181° / 60°0
81 °
St. Johnsville, Tuesday, 11 August
Overcast. High 81°, low 60°.
Pressure29.88 inHg
Wind8.7 mph NW
Humidity49%
Visibility6.2 mi
Dew point56°
Wed, 1281° / 56°0.02
81 °
St. Johnsville, Wednesday, 12 August
Light rain. High 81°, low 56°.
Pressure29.80 inHg
Wind4.2 mph W
Humidity48%
Visibility6.2 mi
Dew point56°
Thu, 1372° / 56°0.23
72 °
St. Johnsville, Thursday, 13 August
Light rain. High 72°, low 56°.
Pressure29.77 inHg
Wind18.8 mph W
Humidity50%
Visibility—
Dew point51°
Fri, 1471° / 48°0
71 °
St. Johnsville, Friday, 14 August
Clear. High 71°, low 48°.
Pressure29.97 inHg
Wind14.1 mph W
Humidity38%
Visibility—
Dew point42°
Sat, 1572° / 45°0
72 °
St. Johnsville, Saturday, 15 August
Mostly clear. High 72°, low 45°.
Pressure30.15 inHg
Wind12.8 mph NW
Humidity37%
Visibility—
Dew point42°
Sun, 1670° / 48°0
70 °
St. Johnsville, Sunday, 16 August
Overcast. High 70°, low 48°.
Pressure30.15 inHg
Wind5.2 mph W
Humidity53%
Visibility—
Dew point49°
Mon, 1762° / 56°0.01
62 °
St. Johnsville, Monday, 17 August
Light rain. High 62°, low 56°.
Pressure29.97 inHg
Wind3.4 mph SE
Humidity90%
Visibility—
Dew point56°
Tue, 1877° / 53°0
77 °
St. Johnsville, Tuesday, 18 August
Partly cloudy. High 77°, low 53°.
Pressure29.94 inHg
Wind8.3 mph W
Humidity46%
Visibility—
Dew point52°
Wed, 1977° / 57°0.24
77 °
St. Johnsville, Wednesday, 19 August
Rain. High 77°, low 57°.
Pressure29.80 inHg
Wind6.6 mph SE
Humidity59%
Visibility—
Dew point59°
Thu, 2066° / 56°0.19
66 °
St. Johnsville, Thursday, 20 August
Rain. High 66°, low 56°.
Pressure29.77 inHg
Wind8.7 mph W
Humidity95%
Visibility—
Dew point61°
Fri, 2174° / 52°0
74 °
St. Johnsville, Friday, 21 August
Overcast. High 74°, low 52°.
Pressure29.85 inHg
Wind7.1 mph W
Humidity42%
Visibility—
Dew point48°
Sat, 2281° / 52°0.05
81 °
St. Johnsville, Saturday, 22 August
Light rain. High 81°, low 52°.
Pressure29.88 inHg
Wind9.9 mph SW
Humidity37%
Visibility—
Dew point49°
Sun, 2370° / 58°0.6
70 °
St. Johnsville, Sunday, 23 August
Rain. High 70°, low 58°.
Pressure29.80 inHg
Wind15.9 mph W
Humidity91%
Visibility—
Dew point62°
Mon, 2471° / 52°0
71 °
St. Johnsville, Monday, 24 August
Clear. High 71°, low 52°.
Pressure30.18 inHg
Wind9 mph W
Humidity36%
Visibility—
Dew point40°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2577° / 59°0.09
77 °
St. Johnsville, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high77°
Average low59°
Average precipitation0.09 in
Chance of precipitation38%
Record high93° (2007)
Record low44° (1971)
Wed, 2678° / 60°0.06
78 °
St. Johnsville, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high78°
Average low60°
Average precipitation0.06 in
Chance of precipitation17%
Record high87° (1975)
Record low47° (1977)
Thu, 2777° / 61°0.18
77 °
St. Johnsville, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high77°
Average low61°
Average precipitation0.18 in
Chance of precipitation42%
Record high89° (1993)
Record low49° (1969)
Fri, 2877° / 61°0.21
77 °
St. Johnsville, Friday, 28 August
Climate normal for this date — 60-year average.
Average high77°
Average low61°
Average precipitation0.21 in
Chance of precipitation48%
Record high91° (2018)
Record low48° (2025)
Sat, 2976° / 60°0.18
76 °
St. Johnsville, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high76°
Average low60°
Average precipitation0.18 in
Chance of precipitation37%
Record high91° (2018)
Record low44° (1982)
Sun, 3076° / 59°0.13
76 °
St. Johnsville, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high76°
Average low59°
Average precipitation0.13 in
Chance of precipitation35%
Record high91° (1973)
Record low44° (1965)
Mon, 3176° / 59°0.11
76 °
St. Johnsville, Monday, 31 August
Climate normal for this date — 60-year average.
Average high76°
Average low59°
Average precipitation0.11 in
Chance of precipitation40%
Record high92° (1973)
Record low45° (1976)
Tue, 0175° / 58°0.06
75 °
St. Johnsville, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high75°
Average low58°
Average precipitation0.06 in
Chance of precipitation25%
Record high90° (1973)
Record low44° (2017)
Wed, 0276° / 58°0.12
76 °
St. Johnsville, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high76°
Average low58°
Average precipitation0.12 in
Chance of precipitation35%
Record high90° (1973)
Record low43° (2017)
Thu, 0375° / 58°0.13
75 °
St. Johnsville, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high75°
Average low58°
Average precipitation0.13 in
Chance of precipitation32%
Record high90° (1973)
Record low46° (2024)
Fri, 0475° / 59°0.11
75 °
St. Johnsville, Friday, 4 September
Climate normal for this date — 60-year average.
Average high75°
Average low59°
Average precipitation0.11 in
Chance of precipitation30%
Record high91° (1973)
Record low46° (1987)
Sat, 0575° / 58°0.1
75 °
St. Johnsville, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high75°
Average low58°
Average precipitation0.1 in
Chance of precipitation27%
Record high93° (1973)
Record low46° (1974)
Sun, 0674° / 58°0.15
74 °
St. Johnsville, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high74°
Average low58°
Average precipitation0.15 in
Chance of precipitation30%
Record high87° (1983)
Record low46° (1984)
Mon, 0774° / 58°0.1
74 °
St. Johnsville, Monday, 7 September
Climate normal for this date — 60-year average.
Average high74°
Average low58°
Average precipitation0.1 in
Chance of precipitation27%
Record high92° (2007)
Record low42° (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 St. Johnsville, 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 St. Johnsville, 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.