Monthly outlook for San Juan, TX: average high 79.8°, average low 67.4°. That is 0.1° above the climate normal for November. Precipitation is expected on 7 days (about 4.9 inches), against a normal of 3 days and 0.7 inches. The warmest day looks like 5 November (91.3°), the coolest 9 November (62.3°).
79.8°/67.4°
Average high / low
+0.1°
Above normal
7 / 3
Wet days / normal
4.9 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
3 November – 12 November
80.5°
80.6°
-0.1°
13 November – 22 November
78.8°
77.9°
+0.5°
23 November – 2 December
at normal
75.6°
—
November records over 66 years
97.3°4 November 1988All-time high
35.4°28 November 1993All-time low
Climate normals and records are computed from the nearest reference point — McAllen (6 mi).
Wed, 0486° / 66°0
86 °
San Juan, Wednesday, 4 November
Clear. High 86°, low 66°.
Pressure29.97 inHg
Wind4.6 mph N
Humidity43%
Visibility6.2 mi
Dew point59°
Thu, 0591° / 68°0.04
91 °
San Juan, Thursday, 5 November
Light rain. High 91°, low 68°.
Pressure29.83 inHg
Wind6.4 mph S
Humidity51%
Visibility6.2 mi
Dew point69°
Fri, 0681° / 71°0.44
81 °
San Juan, Friday, 6 November
Heavy rain. High 81°, low 71°.
Pressure30.00 inHg
Wind10.2 mph NE
Humidity65%
Visibility6.2 mi
Dew point68°
Sat, 0777° / 67°0.14
77 °
San Juan, Saturday, 7 November
Light rain. High 77°, low 67°.
Pressure30.03 inHg
Wind7.4 mph N
Humidity63%
Visibility6.2 mi
Dew point64°
Sun, 0877° / 64°2.71
77 °
San Juan, Sunday, 8 November
Heavy rain. High 77°, low 64°.
Pressure30.03 inHg
Wind9.1 mph N
Humidity87%
Visibility—
Dew point68°
Mon, 0972° / 62°0
72 °
San Juan, Monday, 9 November
Overcast. High 72°, low 62°.
Pressure30.21 inHg
Wind9.8 mph NW
Humidity57%
Visibility—
Dew point52°
Tue, 1078° / 62°0
78 °
San Juan, Tuesday, 10 November
Overcast. High 78°, low 62°.
Pressure30.15 inHg
Wind9.7 mph SE
Humidity42%
Visibility—
Dew point48°
Wed, 1176° / 66°0
76 °
San Juan, Wednesday, 11 November
Overcast. High 76°, low 66°.
Pressure30.06 inHg
Wind10.2 mph SE
Humidity57%
Visibility—
Dew point58°
Thu, 1278° / 70°0.63
78 °
San Juan, Thursday, 12 November
Rain. High 78°, low 70°.
Pressure29.91 inHg
Wind12.4 mph SE
Humidity64%
Visibility—
Dew point64°
Fri, 1378° / 70°0.2
78 °
San Juan, Friday, 13 November
Light rain. High 78°, low 70°.
Pressure29.85 inHg
Wind13.1 mph SE
Humidity74%
Visibility—
Dew point66°
Sat, 1478° / 68°0.66
78 °
San Juan, Saturday, 14 November
Rain. High 78°, low 68°.
Pressure29.85 inHg
Wind18.3 mph N
Humidity72%
Visibility—
Dew point63°
Sun, 1578° / 65°0
78 °
San Juan, Sunday, 15 November
Mostly clear. High 78°, low 65°.
Pressure30.06 inHg
Wind14.3 mph NW
Humidity49%
Visibility—
Dew point54°
Mon, 1679° / 66°0
79 °
San Juan, Monday, 16 November
Clear. High 79°, low 66°.
Pressure30.06 inHg
Wind14.4 mph E
Humidity50%
Visibility—
Dew point55°
Tue, 1781° / 65°0
81 °
San Juan, Tuesday, 17 November
Overcast. High 81°, low 65°.
Pressure29.97 inHg
Wind9.1 mph E
Humidity52%
Visibility—
Dew point56°
Wed, 1880° / 70°0.02
80 °
San Juan, Wednesday, 18 November
Light rain. High 80°, low 70°.
Pressure29.88 inHg
Wind14 mph S
Humidity59%
Visibility—
Dew point63°
From day 17 onward the outlook is built from 60-year climate statistics
Thu, 1978° / 62°0.04
78 °
San Juan, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high78°
Average low62°
Average precipitation0.04 in
Chance of precipitation18%
Record high94° (1983)
Record low42° (1980)
Fri, 2077° / 60°0.04
77 °
San Juan, Friday, 20 November
Climate normal for this date — 60-year average.
Average high77°
Average low60°
Average precipitation0.04 in
Chance of precipitation15%
Record high92° (1994)
Record low39° (1969)
Sat, 2178° / 60°0.03
78 °
San Juan, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high78°
Average low60°
Average precipitation0.03 in
Chance of precipitation10%
Record high92° (2025)
Record low41° (1969)
Sun, 2277° / 60°0.06
77 °
San Juan, Sunday, 22 November
Climate normal for this date — 60-year average.
Average high77°
Average low60°
Average precipitation0.06 in
Chance of precipitation20%
Record high92° (1983)
Record low46° (1972)
Mon, 2377° / 61°0.04
77 °
San Juan, Monday, 23 November
Climate normal for this date — 60-year average.
Average high77°
Average low61°
Average precipitation0.04 in
Chance of precipitation17%
Record high89° (2025)
Record low40° (1975)
Tue, 2476° / 60°0.05
76 °
San Juan, Tuesday, 24 November
Climate normal for this date — 60-year average.
Average high76°
Average low60°
Average precipitation0.05 in
Chance of precipitation18%
Record high92° (2025)
Record low39° (1970)
Wed, 2577° / 59°0.06
77 °
San Juan, Wednesday, 25 November
Climate normal for this date — 60-year average.
Average high77°
Average low59°
Average precipitation0.06 in
Chance of precipitation20%
Record high95° (1965)
Record low44° (2013)
Thu, 2677° / 60°0.05
77 °
San Juan, Thursday, 26 November
Climate normal for this date — 60-year average.
Average high77°
Average low60°
Average precipitation0.05 in
Chance of precipitation23%
Record high96° (1965)
Record low41° (1974)
Fri, 2776° / 59°0.06
76 °
San Juan, Friday, 27 November
Climate normal for this date — 60-year average.
Average high76°
Average low59°
Average precipitation0.06 in
Chance of precipitation20%
Record high94° (1994)
Record low39° (1980)
Sat, 2874° / 57°0.05
74 °
San Juan, Saturday, 28 November
Climate normal for this date — 60-year average.
Average high74°
Average low57°
Average precipitation0.05 in
Chance of precipitation22%
Record high91° (2016)
Record low35° (1993)
Sun, 2975° / 58°0.03
75 °
San Juan, Sunday, 29 November
Climate normal for this date — 60-year average.
Average high75°
Average low58°
Average precipitation0.03 in
Chance of precipitation17%
Record high91° (2010)
Record low36° (2001)
Mon, 3074° / 58°0.02
74 °
San Juan, Monday, 30 November
Climate normal for this date — 60-year average.
Average high74°
Average low58°
Average precipitation0.02 in
Chance of precipitation15%
Record high91° (2019)
Record low37° (1976)
Tue, 0174° / 57°0.04
74 °
San Juan, Tuesday, 1 December
Climate normal for this date — 60-year average.
Average high74°
Average low57°
Average precipitation0.04 in
Chance of precipitation12%
Record high86° (1982)
Record low40° (1976)
Wed, 0276° / 58°0.07
76 °
San Juan, Wednesday, 2 December
Climate normal for this date — 60-year average.
Average high76°
Average low58°
Average precipitation0.07 in
Chance of precipitation15%
Record high89° (1964)
Record low43° (1985)
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 San Juan, 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 San Juan, 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.