Monthly outlook for Silver Lake, IA: average high 78.3°, average low 59.6°. That is 0.6° above the climate normal for August. Precipitation is expected on 7 days (about 0.9 inches), against a normal of 5 days and 2.3 inches. The warmest day looks like 18 August (91.7°), the coolest 21 August (50.8°).
78.3°/59.6°
Average high / low
+0.6°
Above normal
7 / 5
Wet days / normal
0.9 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
79°
77.4°
+0.9°
19 August – 28 August
77.3°
77.4°
-0.1°
29 August – 7 September
at normal
75.8°
—
August records over 66 years
100°23 August 2023All-time high
42.1°28 August 1986All-time low
Climate normals and records are computed from the nearest reference point — Myrtle (12 mi).
Mon, 1083° / 67°0.14
83 °
Silver Lake, Monday, 10 August
Rain. High 83°, low 67°.
Pressure29.88 inHg
Wind11.5 mph E
Humidity76%
Visibility6.2 mi
Dew point71°
Tue, 1181° / 64°0.2
81 °
Silver Lake, Tuesday, 11 August
Rain. High 81°, low 64°.
Pressure29.83 inHg
Wind8.5 mph NE
Humidity71%
Visibility6.2 mi
Dew point67°
Wed, 1279° / 64°0
79 °
Silver Lake, Wednesday, 12 August
Overcast. High 79°, low 64°.
Pressure29.94 inHg
Wind9.1 mph NE
Humidity54%
Visibility6.2 mi
Dew point61°
Thu, 1372° / 60°0
72 °
Silver Lake, Thursday, 13 August
Overcast. High 72°, low 60°.
Pressure30.06 inHg
Wind7.5 mph NE
Humidity65%
Visibility—
Dew point55°
Fri, 1477° / 57°0
77 °
Silver Lake, Friday, 14 August
Overcast. High 77°, low 57°.
Pressure30.15 inHg
Wind5.9 mph SE
Humidity57%
Visibility—
Dew point56°
Sat, 1571° / 56°0
71 °
Silver Lake, Saturday, 15 August
Overcast. High 71°, low 56°.
Pressure30.24 inHg
Wind15.3 mph SE
Humidity60%
Visibility—
Dew point55°
Sun, 1674° / 56°0
74 °
Silver Lake, Sunday, 16 August
Overcast. High 74°, low 56°.
Pressure30.12 inHg
Wind7.4 mph SE
Humidity70%
Visibility—
Dew point60°
Mon, 1784° / 63°0.04
84 °
Silver Lake, Monday, 17 August
Light rain. High 84°, low 63°.
Pressure30.00 inHg
Wind9.4 mph SE
Humidity54%
Visibility—
Dew point63°
Tue, 1892° / 68°0.08
92 °
Silver Lake, Tuesday, 18 August
Light rain. High 92°, low 68°.
Pressure29.88 inHg
Wind16 mph SW
Humidity40%
Visibility—
Dew point60°
Wed, 1976° / 58°0.09
76 °
Silver Lake, Wednesday, 19 August
Light rain. High 76°, low 58°.
Pressure30.06 inHg
Wind14.9 mph N
Humidity53%
Visibility—
Dew point52°
Thu, 2065° / 54°0.03
65 °
Silver Lake, Thursday, 20 August
Light rain. High 65°, low 54°.
Pressure30.18 inHg
Wind6.9 mph SE
Humidity89%
Visibility—
Dew point55°
Fri, 2175° / 51°0
75 °
Silver Lake, Friday, 21 August
Partly cloudy. High 75°, low 51°.
Pressure30.03 inHg
Wind13.7 mph SE
Humidity49%
Visibility—
Dew point50°
Sat, 2285° / 56°0.18
85 °
Silver Lake, Saturday, 22 August
Light rain. High 85°, low 56°.
Pressure29.80 inHg
Wind14.5 mph NW
Humidity63%
Visibility—
Dew point58°
Sun, 2381° / 56°0
81 °
Silver Lake, Sunday, 23 August
Clear. High 81°, low 56°.
Pressure29.94 inHg
Wind12.7 mph NW
Humidity42%
Visibility—
Dew point50°
Mon, 2483° / 60°0.01
83 °
Silver Lake, Monday, 24 August
Light rain. High 83°, low 60°.
Pressure29.91 inHg
Wind15.8 mph S
Humidity54%
Visibility—
Dew point61°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2578° / 62°0.13
78 °
Silver Lake, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high78°
Average low62°
Average precipitation0.13 in
Chance of precipitation40%
Record high92° (2020)
Record low50° (2025)
Wed, 2678° / 63°0.11
78 °
Silver Lake, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high78°
Average low63°
Average precipitation0.11 in
Chance of precipitation33%
Record high93° (2024)
Record low48° (1964)
Thu, 2778° / 62°0.15
78 °
Silver Lake, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high78°
Average low62°
Average precipitation0.15 in
Chance of precipitation30%
Record high91° (2013)
Record low48° (1971)
Fri, 2877° / 62°0.17
77 °
Silver Lake, Friday, 28 August
Climate normal for this date — 60-year average.
Average high77°
Average low62°
Average precipitation0.17 in
Chance of precipitation37%
Record high91° (1984)
Record low42° (1986)
Sat, 2978° / 61°0.1
78 °
Silver Lake, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high78°
Average low61°
Average precipitation0.1 in
Chance of precipitation28%
Record high93° (2012)
Record low47° (1988)
Sun, 3076° / 61°0.11
76 °
Silver Lake, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high76°
Average low61°
Average precipitation0.11 in
Chance of precipitation32%
Record high96° (2012)
Record low48° (2009)
Mon, 3176° / 60°0.11
76 °
Silver Lake, Monday, 31 August
Climate normal for this date — 60-year average.
Average high76°
Average low60°
Average precipitation0.11 in
Chance of precipitation28%
Record high87° (1960)
Record low45° (1967)
Tue, 0176° / 59°0.07
76 °
Silver Lake, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high76°
Average low59°
Average precipitation0.07 in
Chance of precipitation25%
Record high91° (2011)
Record low44° (1974)
Wed, 0276° / 60°0.11
76 °
Silver Lake, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high76°
Average low60°
Average precipitation0.11 in
Chance of precipitation35%
Record high93° (2023)
Record low46° (1968)
Thu, 0375° / 60°0.1
75 °
Silver Lake, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high75°
Average low60°
Average precipitation0.1 in
Chance of precipitation32%
Record high94° (2023)
Record low39° (1974)
Fri, 0476° / 59°0.1
76 °
Silver Lake, Friday, 4 September
Climate normal for this date — 60-year average.
Average high76°
Average low59°
Average precipitation0.1 in
Chance of precipitation22%
Record high94° (2023)
Record low43° (1974)
Sat, 0576° / 59°0.09
76 °
Silver Lake, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high76°
Average low59°
Average precipitation0.09 in
Chance of precipitation28%
Record high89° (2023)
Record low40° (1962)
Sun, 0675° / 59°0.09
75 °
Silver Lake, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high75°
Average low59°
Average precipitation0.09 in
Chance of precipitation23%
Record high88° (1960)
Record low44° (1962)
Mon, 0774° / 58°0.08
74 °
Silver Lake, Monday, 7 September
Climate normal for this date — 60-year average.
Average high74°
Average low58°
Average precipitation0.08 in
Chance of precipitation27%
Record high90° (1978)
Record low44° (2025)
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 Silver Lake, IA 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 Silver Lake, IA 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.