Monthly outlook for Alamo, TX: average high 101°, average low 80.1°. That is 2.4° above the climate normal for August. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 4 days and 1.0 inches. The warmest day looks like 16 August (104.3°), the coolest 10 August (76.4°).
101°/80.1°
Average high / low
+2.4°
Above normal
0 / 4
Wet days / normal
0.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
100.7°
96.8°
+2.1°
18 August – 27 August
101.5°
95.6°
+3.2°
28 August – 6 September
at normal
93.4°
—
August records over 66 years
105.8°16 August 2019All-time high
67.6°13 August 1967All-time low
Climate normals and records are computed from the nearest reference point — McAllen (9 mi).
Sun, 0998° / 78°0
98 °
Alamo, Sunday, 9 August
Light rain. High 98°, low 78°.
Pressure29.97 inHg
Wind7.4 mph SE
Humidity43%
Visibility6.2 mi
Dew point68°
Mon, 10101° / 76°0
101 °
Alamo, Monday, 10 August
Clear. High 101°, low 76°.
Pressure29.97 inHg
Wind15.7 mph SE
Humidity39%
Visibility6.2 mi
Dew point68°
Tue, 11101° / 81°0
101 °
Alamo, Tuesday, 11 August
Clear. High 101°, low 81°.
Pressure29.97 inHg
Wind16.2 mph SE
Humidity39%
Visibility6.2 mi
Dew point69°
Wed, 12100° / 81°0
100 °
Alamo, Wednesday, 12 August
Clear. High 100°, low 81°.
Pressure29.91 inHg
Wind20.3 mph SE
Humidity33%
Visibility6.2 mi
Dew point65°
Thu, 13101° / 82°0
101 °
Alamo, Thursday, 13 August
Clear. High 101°, low 82°.
Pressure29.85 inHg
Wind21.2 mph SE
Humidity31%
Visibility—
Dew point62°
Fri, 14101° / 81°0
101 °
Alamo, Friday, 14 August
Clear. High 101°, low 81°.
Pressure29.94 inHg
Wind19.3 mph SE
Humidity34%
Visibility—
Dew point64°
Sat, 15100° / 82°0
100 °
Alamo, Saturday, 15 August
Overcast. High 100°, low 82°.
Pressure30.06 inHg
Wind19.7 mph SE
Humidity36%
Visibility—
Dew point66°
Sun, 16104° / 80°0
104 °
Alamo, Sunday, 16 August
Clear. High 104°, low 80°.
Pressure30.06 inHg
Wind20.3 mph SE
Humidity34%
Visibility—
Dew point63°
Mon, 17104° / 79°0
104 °
Alamo, Monday, 17 August
Clear. High 104°, low 79°.
Pressure30.03 inHg
Wind19.8 mph SE
Humidity33%
Visibility—
Dew point62°
Tue, 18103° / 80°0
103 °
Alamo, Tuesday, 18 August
Overcast. High 103°, low 80°.
Pressure29.97 inHg
Wind20.7 mph SE
Humidity30%
Visibility—
Dew point60°
Wed, 19102° / 79°0
102 °
Alamo, Wednesday, 19 August
Clear. High 102°, low 79°.
Pressure29.94 inHg
Wind18.7 mph SE
Humidity32%
Visibility—
Dew point62°
Thu, 20101° / 79°0
101 °
Alamo, Thursday, 20 August
Clear. High 101°, low 79°.
Pressure29.88 inHg
Wind19.4 mph SE
Humidity26%
Visibility—
Dew point57°
Fri, 21102° / 81°0
102 °
Alamo, Friday, 21 August
Clear. High 102°, low 81°.
Pressure29.88 inHg
Wind18.9 mph SE
Humidity35%
Visibility—
Dew point65°
Sat, 22102° / 81°0
102 °
Alamo, Saturday, 22 August
Clear. High 102°, low 81°.
Pressure29.85 inHg
Wind18.8 mph SE
Humidity33%
Visibility—
Dew point64°
Sun, 2398° / 82°0
98 °
Alamo, Sunday, 23 August
Overcast. High 98°, low 82°.
Pressure29.91 inHg
Wind18.3 mph SE
Humidity42%
Visibility—
Dew point67°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2495° / 78°0.06
95 °
Alamo, Monday, 24 August
Climate normal for this date — 60-year average.
Average high95°
Average low78°
Average precipitation0.06 in
Chance of precipitation30%
Record high102° (2010)
Record low70° (1973)
Tue, 2594° / 78°0.06
94 °
Alamo, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high94°
Average low78°
Average precipitation0.06 in
Chance of precipitation38%
Record high103° (2002)
Record low74° (1967)
Wed, 2695° / 77°0.07
95 °
Alamo, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high95°
Average low77°
Average precipitation0.07 in
Chance of precipitation30%
Record high103° (2002)
Record low73° (1961)
Thu, 2795° / 77°0.06
95 °
Alamo, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high95°
Average low77°
Average precipitation0.06 in
Chance of precipitation25%
Record high103° (2002)
Record low71° (1961)
Fri, 2894° / 77°0.13
94 °
Alamo, Friday, 28 August
Climate normal for this date — 60-year average.
Average high94°
Average low77°
Average precipitation0.13 in
Chance of precipitation35%
Record high103° (2011)
Record low71° (1961)
Sat, 2994° / 77°0.11
94 °
Alamo, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high94°
Average low77°
Average precipitation0.11 in
Chance of precipitation38%
Record high103° (2012)
Record low71° (2015)
Sun, 3094° / 77°0.09
94 °
Alamo, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high94°
Average low77°
Average precipitation0.09 in
Chance of precipitation42%
Record high102° (2019)
Record low71° (1967)
Mon, 3194° / 77°0.11
94 °
Alamo, Monday, 31 August
Climate normal for this date — 60-year average.
Average high94°
Average low77°
Average precipitation0.11 in
Chance of precipitation43%
Record high102° (2000)
Record low70° (1967)
Tue, 0194° / 77°0.1
94 °
Alamo, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high94°
Average low77°
Average precipitation0.1 in
Chance of precipitation43%
Record high103° (2020)
Record low71° (1967)
Wed, 0294° / 77°0.1
94 °
Alamo, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high94°
Average low77°
Average precipitation0.1 in
Chance of precipitation40%
Record high102° (1974)
Record low72° (1969)
Thu, 0393° / 77°0.13
93 °
Alamo, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high93°
Average low77°
Average precipitation0.13 in
Chance of precipitation43%
Record high103° (2000)
Record low72° (1987)
Fri, 0493° / 77°0.15
93 °
Alamo, Friday, 4 September
Climate normal for this date — 60-year average.
Average high93°
Average low77°
Average precipitation0.15 in
Chance of precipitation43%
Record high105° (2000)
Record low72° (1967)
Sat, 0592° / 76°0.11
92 °
Alamo, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high92°
Average low76°
Average precipitation0.11 in
Chance of precipitation45%
Record high108° (2000)
Record low69° (1974)
Sun, 0692° / 76°0.1
92 °
Alamo, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high92°
Average low76°
Average precipitation0.1 in
Chance of precipitation38%
Record high104° (2000)
Record low65° (1974)
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 Alamo, TX 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 Alamo, TX 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.