Expand
Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Weather in January
January, like December, is an agreeable winter month in San Isidro, Texas, with an average temperature ranging between min 52.7°F (11.5°C) and max 69.8°F (21°C). January, with average temperatures reaching a high of 69.8°F (21°C) and a low of 52.7°F (11.5°C), is the coldest month. Weather in January »
Weather in February
The last month of the winter, February, is a warm month in San Isidro, Texas, with an average temperature varying between 75.7°F (24.3°C) and 57°F (13.9°C). As February sets, the average high-temperature shows a slight increase, moving up from an agreeable 69.8°F (21°C) in January to a warm 75.7°F (24.3°C). Weather in February »
Weather in March
March, the first month of the spring in San Isidro, is still a warm month, with an average temperature ranging between min 62.4°F (16.9°C) and max 83.3°F (28.5°C). A gentle upsurge in temperatures occurs as February gives way to March, with average highs shifting from a moderately hot 75.7°F (24.3°C) to a still warm 83.3°F (28.5°C). Weather in March »
Weather in April
April in San Isidro, Texas, is a hot spring month, with an average temperature fluctuating between 68.4°F (20.2°C) and 90.1°F (32.3°C). Observing a slight rise in April, the average high-temperature shifts from March's moderately hot 83.3°F (28.5°C) to a hot 90.1°F (32.3°C). Weather in April »
Weather in May
The last month of the spring, May, is another hot month in San Isidro, Texas, with an average temperature varying between 93.9°F (34.4°C) and 73°F (22.8°C). The start of May sees the average high-temperature at a still hot 93.9°F (34.4°C), showing little difference from April's 90.1°F (32.3°C). Weather in May »
Weather in June
The first month of the summer, June, is a fiery hot month in San Isidro, Texas, with an average temperature fluctuating between 97.7°F (36.5°C) and 76.8°F (24.9°C). In San Isidro, June's average high-temperature stands at a fiery hot 97.7°F (36.5°C), closely related to the preceding month. Weather in June »
Weather in July
July, like June, in San Isidro, Texas, is another sweltering summer month, with an average temperature varying between 78.4°F (25.8°C) and 99.3°F (37.4°C). Transitioning into July, San Isidro records an average high-temperature of a still very hot 99.3°F (37.4°C), almost identical to June's 97.7°F (36.5°C). Weather in July »
Weather in August
The last month of the summer, August, is also a fiery hot month in San Isidro, Texas, with an average temperature fluctuating between 100°F (37.8°C) and 80.1°F (26.7°C). San Isidro's temperatures tend to reach their peak averages in August, with a high of 100°F (37.8°C) and a low of 80.1°F (26.7°C). Throughout August, the heat index is evaluated at a life-threatening hot 122°F (50°C). Weather in August »
Weather in September
September, the first month of the autumn in San Isidro, is still a tropical month, with an average temperature fluctuating between 93°F (33.9°C) and 77°F (25°C). A moderate decline in average high-temperatures is noted in September, moving from a torrid 100°F (37.8°C) in August to a tropical 93°F (33.9°C). Weather in September »
Weather in October
October, like September, is a hot autumn month in San Isidro, Texas, with an average temperature ranging between min 70°F (21.1°C) and max 87.6°F (30.9°C). October marks a gentle change in average high-temperature, declining from September's 93°F (33.9°C) to a still tropical 87.6°F (30.9°C). Weather in October »
Weather in November
The last month of the autumn, November, is another warm month in San Isidro, Texas, with an average temperature varying between 77.5°F (25.3°C) and 61°F (16.1°C). November brings a minor decrease, with the average high-temperature reducing from a tropical 87.6°F (30.9°C) in October to a warm 77.5°F (25.3°C). Weather in November »
Weather in December
December, the first month of the winter in San Isidro, is still a pleasant month, with an average temperature fluctuating between 54.5°F (12.5°C) and 70.9°F (21.6°C). December ushers in a minute temperature change, with average high-temperatures reducing from November's moderately hot 77.5°F (25.3°C) to a pleasant 70.9°F (21.6°C). Weather in December »
Updated: Aug 21, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What part of the year is the coldest?
In San Isidro, January records the average lowest temperatures, peaking at 69.8°F (21°C) and reaching a low of 52.7°F (11.5°C).
How many days does it rain?
Throughout the year, there are 98.5 rainfall days, and 13.11" (333mm) of precipitation is accumulated.
When does it snow?
Months with snowfall are January and February.
What is the snowiest month in San Isidro?
The months with the most snowfall days are January and February, with an average of 0.1 snowfall days.
How many days does it snow?
In San Isidro, during the entire year, snow falls for 0.2 days.
What is the driest month?
February is the month with the least rainfall. Rain falls for 5.8 days and accumulates 0.47" (12mm) of precipitation.
When it does not snow?
In San Isidro, snow does not fall in March through December.
When is Daylight Saving Time (DST)?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from CST to CDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from CDT to CST.
When are the longest days?
The month with the longest days is June, with an average of 13h and 48min of daylight.
What is the month with the most sunshine in San Isidro?
The months with the most sunshine in San Isidro are June and July, with an average of 11.3h of sunshine.
What are the months with the highest UV index?
July and August, with an average maximum UV index of 8, are months with the highest UV index.
What are the warmest months?
August is the month when San Isidro sees the average highest temperatures, with a high of 100°F (37.8°C) and a low of 80.1°F (26.7°C).
What is the least humid month?
The least humid month is August, with an average relative humidity of 53%.
What is the rainiest month in San Isidro?
September is the month with the most rainfall. Rain falls for 15.3 days and accumulates 2.56" (65mm) of precipitation.
What is the most humid month?
The most humid month is December, with an average relative humidity of 65%.
What is the month with the shortest days?
The month with the shortest days is December, with an average of 10h and 30min of daylight.
What is the month with the least sunshine?
The month with the least sunshine is December, with an average of 5.8h of sunshine.
What is the month with the lowest UV index?
The month with the lowest UV index is December, with an average maximum UV index of 4.
Average temperature
San Isidro, TX
The warmest month (with the highest average high temperature) is August (100°F).
The month with the lowest average high temperature is January (69.8°F).
The month with the highest average low temperature is August (80.1°F).
The coldest month (with the lowest average low temperature) is January (52.7°F).
Average pressure
San Isidro, TX
- Average pressure in January:
30.12"Hg - Average pressure in February:
30.03"Hg - Average pressure in March:
29.98"Hg - Average pressure in April:
29.88"Hg - Average pressure in May:
29.87"Hg - Average pressure in June:
29.87"Hg
- Average pressure in July:
29.92"Hg - Average pressure in August:
29.9"Hg - Average pressure in September:
29.92"Hg - Average pressure in October:
29.97"Hg - Average pressure in November:
30.07"Hg - Average pressure in December:
30.08"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The months with the lowest atmospheric pressure are May and June (29.87"Hg).
Average wind speed
San Isidro, TX
- Average wind speed in January:
9.3mph - Average wind speed in February:
10.3mph - Average wind speed in March:
12mph - Average wind speed in April:
12.6mph - Average wind speed in May:
13.5mph - Average wind speed in June:
12.9mph
- Average wind speed in July:
13.9mph - Average wind speed in August:
12.4mph - Average wind speed in September:
9.9mph - Average wind speed in October:
9.9mph - Average wind speed in November:
9.9mph - Average wind speed in December:
9.2mph
The windiest month (with the highest average wind speed) is July (13.9mph).
The calmest month (with the lowest average wind speed) is December (9.2mph).
Average humidity
San Isidro, TX
The month with the highest relative humidity is December (65%).
The month with the lowest relative humidity is August (53%).
Average rainfall
San Isidro, TX
- Average rainfall in January:
0.55" - Average rainfall in February:
0.47" - Average rainfall in March:
0.79" - Average rainfall in April:
0.75" - Average rainfall in May:
1.69" - Average rainfall in June:
1.38"
- Average rainfall in July:
1.54" - Average rainfall in August:
0.63" - Average rainfall in September:
2.56" - Average rainfall in October:
0.98" - Average rainfall in November:
0.98" - Average rainfall in December:
0.79"
The wettest month (with the highest rainfall) is September (2.56").
The driest month (with the least rainfall) is February (0.47").
Average rainfall days
San Isidro, TX
- Average rainfall days in January:
7.1 days - Average rainfall days in February:
5.8 days - Average rainfall days in March:
7.8 days - Average rainfall days in April:
7.8 days - Average rainfall days in May:
9.3 days - Average rainfall days in June:
8.1 days
- Average rainfall days in July:
7.3 days - Average rainfall days in August:
6.9 days - Average rainfall days in September:
15.3 days - Average rainfall days in October:
8.2 days - Average rainfall days in November:
7.4 days - Average rainfall days in December:
7.5 days
The month with the highest number of rainy days is September (15.3 days).
The month with the least rainy days is February (5.8 days).
Average snowfall days
San Isidro, TX
- Average snowfall days in January:
0.1 days - Average snowfall days in February:
0.1 days - Average snowfall days in March:
0 days - Average snowfall days in April:
0 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0 days - Average snowfall days in November:
0 days - Average snowfall days in December:
0 days
The months with the highest number of snowfall days are January and February (0.1 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight / Average sunshine
San Isidro, TX
- Average daylight in January:
10h and 4min - Average daylight in February:
11h and 2min - Average daylight in March:
12h and 0min - Average daylight in April:
12h and 5min - Average daylight in May:
13h and 3min - Average daylight in June:
13h and 5min
- Average daylight in July:
13h and 4min - Average daylight in August:
13h and 1min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 3min - Average daylight in November:
10h and 5min - Average daylight in December:
10h and 3min
The month with the longest days is June (Average daylight: 13h and 48min).
The month with the shortest days is December (Average daylight: 10h and 30min).
- Average sunshine in January:
7h and 1min - Average sunshine in February:
7h and 5min - Average sunshine in March:
8h and 1min - Average sunshine in April:
8h and 3min - Average sunshine in May:
10h and 0min - Average sunshine in June:
11h and 2min
- Average sunshine in July:
11h and 2min - Average sunshine in August:
9h and 4min - Average sunshine in September:
8h and 4min - Average sunshine in October:
8h and 1min - Average sunshine in November:
6h and 0min - Average sunshine in December:
5h and 5min
The months with the most sunshine are June and July (Average sunshine: 11h and 18min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).
Average sunshine days
San Isidro, TX
- Average sunshine days in January:
21.7 days - Average sunshine days in February:
20.1 days - Average sunshine days in March:
20.8 days - Average sunshine days in April:
20.3 days - Average sunshine days in May:
20.5 days - Average sunshine days in June:
19.9 days
- Average sunshine days in July:
22.6 days - Average sunshine days in August:
22.6 days - Average sunshine days in September:
12.9 days - Average sunshine days in October:
21.1 days - Average sunshine days in November:
20.3 days - Average sunshine days in December:
21.1 days
The months with the most sunshine days are July and August (22.6 days).
The month with the least sunshine days is September (12.9 days).
Average UV index
San Isidro, TX
The months with the highest UV index are July and August (UV index 8).
The month with the lowest UV index is December (UV index 4).
Average cloud cover
San Isidro, TX
The month with the most cloud cover is December (Cloud cover 36).
The month with the least cloud cover is August (Cloud cover 16).
Average visibility
San Isidro, TX
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
San Isidro, Texas, USA
Weather forecast for your location
1. Click Locate me button
2. Allow the app to use your location
2. Allow the app to use your location