Climate and monthly weather forecast
Grandfalls, TX

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Weather in January

January, like December, is another mild winter month in Grandfalls, Texas, with temperature in the range of an average high of 58.5°F (14.7°C) and an average low of 39.4°F (4.1°C). In January, Grandfalls's weather conditions record an average high-temperature of a still refreshing 58.5°F (14.7°C), demonstrating little divergence from the preceding month. Weather in January »

Weather in February

The last month of the winter, February, is an enjoyable month in Grandfalls, Texas, with an average temperature varying between 64.6°F (18.1°C) and 43.3°F (6.3°C). As January gives way to February, the average high-temperature displays a slight ascent, adjusting from a mild 58.5°F (14.7°C) to an enjoyable 64.6°F (18.1°C). Weather in February »

Weather in March

March, the first month of the spring in Grandfalls, is a moderately hot month, with an average temperature fluctuating between 74.7°F (23.7°C) and 51.4°F (10.8°C). As March arrives, a rise in the average high-temperature is observed, moving from a refreshing 64.6°F (18.1°C) in February to a moderately hot 74.7°F (23.7°C). Weather in March »

Weather in April

April, like March, in Grandfalls, Texas, is a moderately hot spring month, with temperature in the range of an average high of 82.2°F (27.9°C) and an average low of 58.1°F (14.5°C). April's arrival signals a subtle increase in average high-temperatures, moving from March's 74.7°F (23.7°C) to a still moderately hot 82.2°F (27.9°C). Weather in April »

Weather in May

May, the last month of the spring in Grandfalls, is a tropical month, with an average temperature varying between 65.8°F (18.8°C) and 89.2°F (31.8°C). The beginning of May marks a minor shift in the average high-temperature, moving from April's warm 82.2°F (27.9°C) to a tropical 89.2°F (31.8°C). Weather in May »

Weather in June

The first month of the summer, June, is a sweltering month in Grandfalls, Texas, with an average temperature varying between 74.5°F (23.6°C) and 96.4°F (35.8°C). June, recording an average high temperature of 96.4°F (35.8°C) and a low temperature of 74.5°F (23.6°C), is Grandfalls's warmest month. June's average heat index is appraised at a sweltering 102.2°F (39°C). Weather in June »

Weather in July

July, like June, in Grandfalls, Texas, is another torrid summer month, with an average temperature fluctuating between 95.9°F (35.5°C) and 76.6°F (24.8°C). In the transition from June to July, Grandfalls reports an average high-temperature of a still sweltering 95.9°F (35.5°C), indicating a close resemblance to the prior month. Weather in July »

Weather in August

August, the last month of the summer in Grandfalls, is also a sweltering month, with an average temperature ranging between min 77°F (25°C) and max 96.3°F (35.7°C). As Grandfalls, Texas, welcomes August, the average high-temperature records at a still very hot 96.3°F (35.7°C), marking an insignificant deviation from the prior month. Weather in August »

Weather in September

September, the first month of the autumn in Grandfalls, is also a hot month, with an average temperature varying between 87.8°F (31°C) and 70.2°F (21.2°C). A modest decline in the average high-temperature is seen during September, decreasing from a fiery hot 96.3°F (35.7°C) in August to a tropical 87.8°F (31°C). Weather in September »

Weather in October

October, the same as September, is another warm autumn month in Grandfalls, Texas, with an average temperature ranging between min 59.7°F (15.4°C) and max 79°F (26.1°C). A mild drop in Grandfalls's average high-temperature is observed in October, transitioning from a hot 87.8°F (31°C) in September to a warm 79°F (26.1°C). Weather in October »

Weather in November

The last month of the autumn, November, is another refreshing month in Grandfalls, Texas, with temperature in the range of an average low of 47.7°F (8.7°C) and an average high of 67.5°F (19.7°C). The average high-temperature drops in November, from October's warm 79°F (26.1°C) to a comfortable 67.5°F (19.7°C). Weather in November »

Weather in December

The first month of the winter, December, is still a mild month in Grandfalls, Texas, with an average temperature ranging between max 58.3°F (14.6°C) and min 40.5°F (4.7°C). In Grandfalls, the lowest temperatures are generally noted in December, averaging a high of 58.3°F (14.6°C) and a low of 40.5°F (4.7°C). Weather in December »
Updated: Jun 18, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How many days does it rain?

In Grandfalls, during the entire year, the rain falls for 63.3 days and collects up to 6.61" (168mm) of precipitation.

When does it snow?

Months with snowfall in Grandfalls are January through March, November and December.

How many days does it snow?

Throughout the year, there are 3.2 snowfall days, and 1.1" (28mm) of snow is accumulated.

What is the driest month?

February is the month with the least rainfall in Grandfalls. Rain falls for 1.9 days and accumulates 0.08" (2mm) of precipitation.

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.

What is the least humid month?

With an average relative humidity of 31%, April is the least humid month.

When it does not snow?

April through October are months without snowfall in Grandfalls.

What is the rainiest month in Grandfalls?

May is the month with the most rainfall. Rain falls for 7.5 days and accumulates 1.1" (28mm) of precipitation.

What month is the hottest?

June is the month when Grandfalls's temperatures reach their peak, with averages of 96.4°F (35.8°C) and lows of 74.5°F (23.6°C).

When are the longest days?

June has the longest days of the year in Grandfalls, with an average of 14h and 12min of daylight.

What month has the most sunshine?

June has the most sunshine of the year, with an average of 11.8h of sunshine.

When is the highest UV index?

July is the month with the highest UV index, with an average maximum UV index of 8.

What are the most humid months?

September and December, with an average relative humidity of 49%, are most humid months.

What is the snowiest month?

The months with the most snowfall are November and December, with an average 0.31" (8mm) of accumulated snow.

What is the coldest month?

Grandfalls notes the coldest temperatures in December, with a average high of 58.3°F (14.6°C) and a low of 40.5°F (4.7°C).

What is the month with the shortest days in Grandfalls?

December has the shortest days of the year, with an average of 10h and 6min of daylight.

What is the month with the least sunshine?

With an average of 7h of sunshine, December has the least sunshine of the year.

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 3.

Average temperature
Grandfalls, TX

Average temperature - Grandfalls, TX

The warmest month (with the highest average high temperature) is June (96.4°F).
The month with the lowest average high temperature is December (58.3°F).

The month with the highest average low temperature is August (77°F).
The coldest month (with the lowest average low temperature) is January (39.4°F).

Average pressure
Grandfalls, TX

Average pressure - Grandfalls, TX

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).

Average wind speed
Grandfalls, TX

Average wind speed - Grandfalls, TX

The windiest month (with the highest average wind speed) is June (13.2mph).
The calmest month (with the lowest average wind speed) is December (8.9mph).

Average humidity
Grandfalls, TX

Average humidity - Grandfalls, TX

The months with the highest relative humidity are September and December (49%).
The month with the lowest relative humidity is April (31%).

Average rainfall
Grandfalls, TX

Average rainfall - Grandfalls, TX

The wettest month (with the highest rainfall) is May (1.1").
The driest month (with the least rainfall) is February (0.08").

Average rainfall days
Grandfalls, TX

Average rainfall days - Grandfalls, TX

The month with the highest number of rainy days is September (10 days).
The month with the least rainy days is February (1.9 days).

Average snowfall
Grandfalls, TX

Average snowfall - Grandfalls, TX

The months with the highest snowfall are November and December (0.31").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days
Grandfalls, TX

Average snowfall days - Grandfalls, TX

The month with the highest number of snowfall days is December (1 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

Average daylight / Average sunshine
Grandfalls, TX

Average daylight / Average sunshine - Grandfalls, TX

The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).

The month with the most sunshine is June (Average sunshine: 11h and 48min).
The month with the least sunshine is December (Average sunshine: 7h and 0min).

Average sunshine days
Grandfalls, TX

Average sunshine days - Grandfalls, TX

The month with the most sunshine days is January (27.8 days).
The month with the least sunshine days is September (18.1 days).

Average visibility
Grandfalls, TX

Average visibility - Grandfalls, 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).

Grandfalls, Texas, USA

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