As of 12:05 CDT

Weather in Rio Grande City, TX

91°

Rio Grande City, Sunday, 9 August, 12:05

Overcast. Feels like 103°. High 95°, low 79°.

Pressure30.00 inHg

Wind8.3 mph SE

Humidity60%

Visibility6.2 mi

Dew point74°

See detailed hourly forecast

Monthly outlook for Rio Grande City, TX: average high 103.4°, average low 79.8°. That is 2.7° above the climate normal for August. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 3 days and 0.8 inches. The warmest day looks like 20 August (106.2°), the coolest 18 August (78.2°).

103.4°/79.8°

Average high / low

+2.7°

Above normal

0 / 3

Wet days / normal

0.0 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
9 August – 18 August	102.1°	99°	+1.7°
19 August – 28 August	105.5°	97.3°	+4.5°
29 August – 7 September	at normal	94.6°	—

August records over 66 years

109.6°9 August 2023All-time high

69.4°13 August 1967All-time low

Climate normals and records are computed from the nearest reference point — Las Lomas (3 mi).

Mon, 10102° / 79°

102 °

Rio Grande City, Monday, 10 August

Mostly clear. High 102°, low 79°.

Pressure29.97 inHg

Wind16.4 mph SE

Humidity37%

Visibility6.2 mi

Dew point65°

Tue, 11104° / 80°

104 °

Rio Grande City, Tuesday, 11 August

Clear. High 104°, low 80°.

Pressure29.97 inHg

Wind17.2 mph SE

Humidity39%

Visibility6.2 mi

Dew point67°

Wed, 12105° / 81°

105 °

Rio Grande City, Wednesday, 12 August

Clear. High 105°, low 81°.

Pressure29.91 inHg

Wind21.2 mph SE

Humidity29%

Visibility6.2 mi

Dew point61°

Thu, 13105° / 81°

105 °

Rio Grande City, Thursday, 13 August

Clear. High 105°, low 81°.

Pressure29.88 inHg

Wind20 mph SE

Humidity32%

Visibility6.2 mi

Dew point64°

Fri, 14102° / 82°

102 °

Rio Grande City, Friday, 14 August

Overcast. High 102°, low 82°.

Pressure29.94 inHg

Wind22.2 mph SE

Humidity31%

Visibility—

Dew point62°

Sat, 1599° / 84°

99 °

Rio Grande City, Saturday, 15 August

Overcast. High 99°, low 84°.

Pressure30.06 inHg

Wind21.8 mph SE

Humidity41%

Visibility—

Dew point67°

Sun, 16103° / 80°

103 °

Rio Grande City, Sunday, 16 August

Partly cloudy. High 103°, low 80°.

Pressure30.06 inHg

Wind25.1 mph E

Humidity35%

Visibility—

Dew point63°

Mon, 17103° / 78°

103 °

Rio Grande City, Monday, 17 August

Clear. High 103°, low 78°.

Pressure30.03 inHg

Wind21.1 mph SE

Humidity26%

Visibility—

Dew point55°

Tue, 18104° / 78°

104 °

Rio Grande City, Tuesday, 18 August

Clear. High 104°, low 78°.

Pressure29.94 inHg

Wind20.7 mph SE

Humidity31%

Visibility—

Dew point60°

Wed, 19106° / 79°

106 °

Rio Grande City, Wednesday, 19 August

Mostly clear. High 106°, low 79°.

Pressure29.91 inHg

Wind21.2 mph SE

Humidity28%

Visibility—

Dew point59°

Thu, 20106° / 79°

106 °

Rio Grande City, Thursday, 20 August

Clear. High 106°, low 79°.

Pressure29.88 inHg

Wind21.4 mph SE

Humidity27%

Visibility—

Dew point59°

Fri, 21106° / 79°

106 °

Rio Grande City, Friday, 21 August

Clear. High 106°, low 79°.

Pressure29.85 inHg

Wind22.8 mph SE

Humidity25%

Visibility—

Dew point57°

Sat, 22106° / 79°

106 °

Rio Grande City, Saturday, 22 August

Clear. High 106°, low 79°.

Pressure29.91 inHg

Wind22.1 mph SE

Humidity28%

Visibility—

Dew point59°

Sun, 23105° / 78°

105 °

Rio Grande City, Sunday, 23 August

Clear. High 105°, low 78°.

Pressure29.97 inHg

Wind24.5 mph E

Humidity33%

Visibility—

Dew point62°

Mon, 24104° / 79°

104 °

Rio Grande City, Monday, 24 August

Light rain. High 104°, low 79°.

Pressure29.97 inHg

Wind22.1 mph E

Humidity34%

Visibility—

Dew point63°

From day 17 onward the outlook is built from 60-year climate statistics

Tue, 2596° / 78°

0.04

96 °

Rio Grande City, Tuesday, 25 August

Climate normal for this date — 60-year average.

Average high96°

Average low78°

Average precipitation0.04 in

Chance of precipitation22%

Record high105° (2002)

Record low73° (1967)

Wed, 2696° / 78°

0.07

96 °

Rio Grande City, Wednesday, 26 August

Climate normal for this date — 60-year average.

Average high96°

Average low78°

Average precipitation0.07 in

Chance of precipitation25%

Record high105° (2002)

Record low73° (1966)

Thu, 2797° / 78°

0.04

97 °

Rio Grande City, Thursday, 27 August

Climate normal for this date — 60-year average.

Average high97°

Average low78°

Average precipitation0.04 in

Chance of precipitation15%

Record high105° (2020)

Record low73° (1961)

Fri, 2896° / 78°

0.11

96 °

Rio Grande City, Friday, 28 August

Climate normal for this date — 60-year average.

Average high96°

Average low78°

Average precipitation0.11 in

Chance of precipitation27%

Record high107° (2023)

Record low72° (1967)

Sat, 2996° / 78°

0.1

96 °

Rio Grande City, Saturday, 29 August

Climate normal for this date — 60-year average.

Average high96°

Average low78°

Average precipitation0.1 in

Chance of precipitation32%

Record high105° (2011)

Record low73° (2015)

Sun, 3096° / 78°

0.07

96 °

Rio Grande City, Sunday, 30 August

Climate normal for this date — 60-year average.

Average high96°

Average low78°

Average precipitation0.07 in

Chance of precipitation37%

Record high105° (2020)

Record low72° (1967)

Mon, 3195° / 78°

0.1

95 °

Rio Grande City, Monday, 31 August

Climate normal for this date — 60-year average.

Average high95°

Average low78°

Average precipitation0.1 in

Chance of precipitation37%

Record high105° (2020)

Record low71° (1967)

Tue, 0195° / 78°

0.11

95 °

Rio Grande City, Tuesday, 1 September

Climate normal for this date — 60-year average.

Average high95°

Average low78°

Average precipitation0.11 in

Chance of precipitation43%

Record high108° (2020)

Record low71° (1967)

Wed, 0295° / 78°

0.11

95 °

Rio Grande City, Wednesday, 2 September

Climate normal for this date — 60-year average.

Average high95°

Average low78°

Average precipitation0.11 in

Chance of precipitation32%

Record high107° (2020)

Record low72° (1969)

Thu, 0395° / 77°

0.11

95 °

Rio Grande City, Thursday, 3 September

Climate normal for this date — 60-year average.

Average high95°

Average low77°

Average precipitation0.11 in

Chance of precipitation35%

Record high104° (2020)

Record low73° (1975)

Fri, 0494° / 77°

0.13

94 °

Rio Grande City, Friday, 4 September

Climate normal for this date — 60-year average.

Average high94°

Average low77°

Average precipitation0.13 in

Chance of precipitation43%

Record high107° (2023)

Record low72° (1967)

Sat, 0594° / 77°

0.09

94 °

Rio Grande City, Saturday, 5 September

Climate normal for this date — 60-year average.

Average high94°

Average low77°

Average precipitation0.09 in

Chance of precipitation38%

Record high109° (2000)

Record low69° (1974)

Sun, 0693° / 77°

0.07

93 °

Rio Grande City, Sunday, 6 September

Climate normal for this date — 60-year average.

Average high93°

Average low77°

Average precipitation0.07 in

Chance of precipitation38%

Record high106° (2000)

Record low65° (1974)

Mon, 0793° / 76°

0.07

93 °

Rio Grande City, Monday, 7 September

Climate normal for this date — 60-year average.

Average high93°

Average low76°

Average precipitation0.07 in

Chance of precipitation42%

Record high104° (2023)

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 Rio Grande City, 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 Rio Grande City, 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.