Monthly outlook for Santiago, MN: average high 84.9°, average low 60.1°. That is 3.8° above the climate normal for August. Precipitation is expected on 8 days (about 1.2 inches), against a normal of 5 days and 2.2 inches. The warmest day looks like 19 August (104.3°), the coolest 14 August (51.8°).
84.9°/60.1°
Average high / low
+3.8°
Above normal
8 / 5
Wet days / normal
1.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
85°
78.3°
+3.8°
19 August – 28 August
84.6°
77.6°
+3.9°
29 August – 7 September
at normal
75.6°
—
August records over 66 years
97.5°22 August 2023All-time high
43.9°21 August 2004All-time low
Climate normals and records are computed from the nearest reference point — Zimmerman (13 mi).
Mon, 1089° / 56°0
89 °
Santiago, Monday, 10 August
Partly cloudy. High 89°, low 56°.
Pressure29.88 inHg
Wind7.6 mph E
Humidity25%
Visibility6.2 mi
Dew point47°
Tue, 1192° / 68°0.04
92 °
Santiago, Tuesday, 11 August
Light rain. High 92°, low 68°.
Pressure29.80 inHg
Wind9.8 mph N
Humidity31%
Visibility6.2 mi
Dew point53°
Wed, 1286° / 58°0
86 °
Santiago, Wednesday, 12 August
Partly cloudy. High 86°, low 58°.
Pressure29.91 inHg
Wind7.7 mph N
Humidity23%
Visibility6.2 mi
Dew point43°
Thu, 1382° / 55°0
82 °
Santiago, Thursday, 13 August
Overcast. High 82°, low 55°.
Pressure30.06 inHg
Wind8.1 mph NE
Humidity26%
Visibility—
Dew point37°
Fri, 1486° / 52°0
86 °
Santiago, Friday, 14 August
Overcast. High 86°, low 52°.
Pressure30.12 inHg
Wind10.5 mph S
Humidity27%
Visibility—
Dew point41°
Sat, 1571° / 56°0
71 °
Santiago, Saturday, 15 August
Light rain. High 71°, low 56°.
Pressure30.18 inHg
Wind12.1 mph S
Humidity57%
Visibility—
Dew point51°
Sun, 1689° / 59°0.01
89 °
Santiago, Sunday, 16 August
Light rain. High 89°, low 59°.
Pressure30.06 inHg
Wind13.5 mph NW
Humidity31%
Visibility—
Dew point48°
Mon, 1783° / 54°0
83 °
Santiago, Monday, 17 August
Overcast. High 83°, low 54°.
Pressure30.09 inHg
Wind9.3 mph S
Humidity27%
Visibility—
Dew point42°
Tue, 1891° / 66°0.15
91 °
Santiago, Tuesday, 18 August
Light rain. High 91°, low 66°.
Pressure29.83 inHg
Wind14.5 mph SW
Humidity48%
Visibility—
Dew point63°
Wed, 19104° / 71°0.08
104 °
Santiago, Wednesday, 19 August
Light rain. High 104°, low 71°.
Pressure29.77 inHg
Wind9.9 mph S
Humidity35%
Visibility—
Dew point62°
Thu, 2091° / 68°0.3
91 °
Santiago, Thursday, 20 August
Rain. High 91°, low 68°.
Pressure29.85 inHg
Wind13.2 mph NW
Humidity23%
Visibility—
Dew point45°
Fri, 2182° / 60°0
82 °
Santiago, Friday, 21 August
Overcast. High 82°, low 60°.
Pressure30.00 inHg
Wind13.1 mph NE
Humidity41%
Visibility—
Dew point50°
Sat, 2289° / 62°0.34
89 °
Santiago, Saturday, 22 August
Rain. High 89°, low 62°.
Pressure29.80 inHg
Wind14.7 mph NE
Humidity54%
Visibility—
Dew point62°
Sun, 2371° / 59°0.07
71 °
Santiago, Sunday, 23 August
Light rain. High 71°, low 59°.
Pressure30.00 inHg
Wind14.2 mph NE
Humidity80%
Visibility—
Dew point59°
Mon, 2471° / 58°0.04
71 °
Santiago, Monday, 24 August
Light rain. High 71°, low 58°.
Pressure30.06 inHg
Wind10.3 mph NE
Humidity77%
Visibility—
Dew point60°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2578° / 62°0.1
78 °
Santiago, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high78°
Average low62°
Average precipitation0.1 in
Chance of precipitation33%
Record high96° (2013)
Record low48° (2025)
Wed, 2678° / 62°0.25
78 °
Santiago, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high78°
Average low62°
Average precipitation0.25 in
Chance of precipitation43%
Record high93° (2013)
Record low49° (1971)
Thu, 2778° / 62°0.14
78 °
Santiago, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high78°
Average low62°
Average precipitation0.14 in
Chance of precipitation28%
Record high92° (2013)
Record low47° (1971)
Fri, 2877° / 61°0.08
77 °
Santiago, Friday, 28 August
Climate normal for this date — 60-year average.
Average high77°
Average low61°
Average precipitation0.08 in
Chance of precipitation30%
Record high91° (1984)
Record low44° (1986)
Sat, 2977° / 61°0.09
77 °
Santiago, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high77°
Average low61°
Average precipitation0.09 in
Chance of precipitation28%
Record high93° (2013)
Record low49° (1976)
Sun, 3076° / 60°0.09
76 °
Santiago, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high76°
Average low60°
Average precipitation0.09 in
Chance of precipitation30%
Record high93° (2012)
Record low49° (2009)
Mon, 3176° / 60°0.1
76 °
Santiago, Monday, 31 August
Climate normal for this date — 60-year average.
Average high76°
Average low60°
Average precipitation0.1 in
Chance of precipitation37%
Record high88° (2013)
Record low47° (1967)
Tue, 0176° / 60°0.08
76 °
Santiago, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high76°
Average low60°
Average precipitation0.08 in
Chance of precipitation25%
Record high91° (2011)
Record low44° (1974)
Wed, 0276° / 61°0.12
76 °
Santiago, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high76°
Average low61°
Average precipitation0.12 in
Chance of precipitation40%
Record high93° (2023)
Record low47° (1974)
Thu, 0375° / 60°0.17
75 °
Santiago, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high75°
Average low60°
Average precipitation0.17 in
Chance of precipitation35%
Record high96° (2023)
Record low40° (1974)
Fri, 0476° / 59°0.12
76 °
Santiago, Friday, 4 September
Climate normal for this date — 60-year average.
Average high76°
Average low59°
Average precipitation0.12 in
Chance of precipitation30%
Record high96° (2023)
Record low43° (2025)
Sat, 0575° / 59°0.08
75 °
Santiago, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high75°
Average low59°
Average precipitation0.08 in
Chance of precipitation20%
Record high90° (1960)
Record low43° (1962)
Sun, 0675° / 59°0.09
75 °
Santiago, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high75°
Average low59°
Average precipitation0.09 in
Chance of precipitation30%
Record high91° (2013)
Record low43° (2025)
Mon, 0774° / 58°0.09
74 °
Santiago, Monday, 7 September
Climate normal for this date — 60-year average.
Average high74°
Average low58°
Average precipitation0.09 in
Chance of precipitation37%
Record high94° (1976)
Record low41° (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 Santiago, MN 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 Santiago, MN 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.