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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
- 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 a freezing cold winter month in Tattnall, Montana, with an average temperature fluctuating between 10.8°F (-11.8°C) and 24.6°F (-4.1°C). Tattnall starts January with an average high-temperature of a still subzero cold 24.6°F (-4.1°C), a minor shift from December's 24.8°F (-4°C). Weather in January »
Weather in February
February, the last month of the winter in Tattnall, is another freezing cold month, with an average temperature fluctuating between 10°F (-12.2°C) and 24.4°F (-4.2°C). With average temperatures fluctuating between a high of 24.4°F (-4.2°C) and a low of 10°F (-12.2°C), February stands out as the coldest month. Weather in February »
Weather in March
March, the first month of the spring in Tattnall, is an icy month, with an average temperature fluctuating between 38.3°F (3.5°C) and 24.3°F (-4.3°C). In Tattnall, the onset of March comes with an increased average high-temperature, moving from February's freezing cold 24.4°F (-4.2°C) to an icy 38.3°F (3.5°C). Weather in March »
Weather in April
April in Tattnall, Montana, is a cool spring month, with an average temperature varying between 36.1°F (2.3°C) and 53.1°F (11.7°C). April is marked by a significant increase, with the average high-temperature advancing from a cold 38.3°F (3.5°C) in March to a cool 53.1°F (11.7°C). Weather in April »
Weather in May
The last month of the spring, May, is a comfortable month in Tattnall, Montana, with an average temperature varying between 46.9°F (8.3°C) and 65.8°F (18.8°C). The shift into May is accompanied by a temperature increase, with the average high-temperature rising from a fresh 53.1°F (11.7°C) in April to a refreshing 65.8°F (18.8°C). Weather in May »
Weather in June
The first month of the summer, June, is a warm month in Tattnall, Montana, with temperature in the range of an average high of 75°F (23.9°C) and an average low of 55.4°F (13°C). June brings an increase in the average high-temperature, progressing from a comfortable 65.8°F (18.8°C) in May to a warm 75°F (23.9°C). Weather in June »
Weather in July
July, the same as June, is a moderately hot summer month in Tattnall, Montana, with an average temperature varying between 84°F (28.9°C) and 63.1°F (17.3°C). In Tattnall, July records the highest average temperatures, peaking at 84°F (28.9°C) and reaching a low of 63.1°F (17.3°C). In July, the average heat index is evaluated at 84.2°F (29°C). Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Tattnall, Montana, with an average temperature varying between 82.8°F (28.2°C) and 62.1°F (16.7°C). The high-temperature average in August for Tattnall is a still warm 82.8°F (28.2°C), staying closely aligned with July's conditions. Weather in August »
Weather in September
September, the first month of the autumn in Tattnall, is still a pleasant month, with temperature in the range of an average high of 71.1°F (21.7°C) and an average low of 53.2°F (11.8°C). The start of September involves a temperature drop, moving from a moderately hot 82.8°F (28.2°C) in August to a pleasant 71.1°F (21.7°C). Weather in September »
Weather in October
October, the same as September, is another fresh autumn month in Tattnall, Montana, with temperature in the range of an average high of 54.3°F (12.4°C) and an average low of 39.4°F (4.1°C). The onset of October brings a clear temperature shift, with the average high-temperature decreasing from an agreeable 71.1°F (21.7°C) in September to a cool 54.3°F (12.4°C). Weather in October »
Weather in November
The last month of the autumn, November, is also a wintry month in Tattnall, Montana, with an average temperature fluctuating between 25.7°F (-3.5°C) and 38.8°F (3.8°C). In Tattnall, stepping into November signifies a significant temperature decrement, moving down from October's cool 54.3°F (12.4°C) to a wintry 38.8°F (3.8°C). Weather in November »
Weather in December
December, the first month of the winter in Tattnall, is still a freezing cold month, with temperature in the range of an average low of 12.7°F (-10.7°C) and an average high of 24.8°F (-4°C). The transition into December indicates a reduction in the average high-temperature, down to a subzero cold 24.8°F (-4°C) from November's wintry 38.8°F (3.8°C). Weather in December »
Updated: Jun 10, 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 is the most humid month?
With an average relative humidity of 85%, January is the most humid month in Tattnall.
How many days does it rain?
In Tattnall, during the entire year, the rain falls for 91.8 days and collects up to 10.63" (270mm) of precipitation.
When does it snow?
January through May, October through December are months with snowfall.
How much does it snow?
In Tattnall, during the entire year, snow falls for 56.9 days and aggregates up to 17.95" (456mm) of snow.
What are the months with the lowest UV index?
The months with the lowest UV index are January through March, October through December, with an average maximum UV index of 2.
What are the coldest months in Tattnall?
Temperature records in Tattnall mark February as the coldest month, with highs averaging 24.4°F (-4.2°C) and lows at 10°F (-12.2°C).
What is the driest month?
The month with the least rainfall is February, when the rain falls for 3.3 days and typically collects 0.43" (11mm) of precipitation.
What is the month with the least sunshine?
The month with the least sunshine is February, with an average of 4.6h of sunshine.
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 MST to MDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from MDT to MST.
What is the wettest month?
The month with the most rainfall is May, when the rain falls for 12.7 days and typically aggregates up to 1.73" (44mm) of precipitation.
When it does not snow?
In Tattnall, snow does not fall in June through September.
When are the longest days?
June has the longest days of the year, with an average of 16h and 6min of daylight.
What time of the year is the hottest?
July is the warmest month, with an average high-temperature of 84°F (28.9°C) and an average low-temperature of 63.1°F (17.3°C).
What month has the most sunshine?
With an average of 11.7h of sunshine, July has the most sunshine of the year.
When is the highest UV index?
With an average maximum UV index of 7, July is the month with the highest UV index.
What is the least humid month?
With an average relative humidity of 41%, August is the least humid month.
When does it snow the most?
December is the month with the most snowfall. Snow falls for 11.8 days and accumulates 3.43" (87mm) of snow.
What is the month with the shortest days?
The month with the shortest days is December, with an average of 8h and 24min of daylight.
Average temperature
Tattnall, MT
The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is February (24.4°F).
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is February (10°F).
Average pressure
Tattnall, MT
- Average pressure in January:
30.13"Hg - Average pressure in February:
30.15"Hg - Average pressure in March:
30.03"Hg - Average pressure in April:
29.93"Hg - Average pressure in May:
29.92"Hg - Average pressure in June:
29.83"Hg
- Average pressure in July:
29.88"Hg - Average pressure in August:
29.88"Hg - Average pressure in September:
29.92"Hg - Average pressure in October:
29.97"Hg - Average pressure in November:
30.03"Hg - Average pressure in December:
30.12"Hg
The month with the highest atmospheric pressure is February (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).
Average wind speed
Tattnall, MT
- Average wind speed in January:
9.2mph - Average wind speed in February:
8.3mph - Average wind speed in March:
9.4mph - Average wind speed in April:
11.3mph - Average wind speed in May:
10.6mph - Average wind speed in June:
10.4mph
- Average wind speed in July:
9.9mph - Average wind speed in August:
9.6mph - Average wind speed in September:
10mph - Average wind speed in October:
10.7mph - Average wind speed in November:
9.4mph - Average wind speed in December:
8.5mph
The windiest month (with the highest average wind speed) is April (11.3mph).
The calmest month (with the lowest average wind speed) is February (8.3mph).
Average humidity
Tattnall, MT
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is August (41%).
Average rainfall
Tattnall, MT
- Average rainfall in January:
0.51" - Average rainfall in February:
0.43" - Average rainfall in March:
0.59" - Average rainfall in April:
0.94" - Average rainfall in May:
1.73" - Average rainfall in June:
1.69"
- Average rainfall in July:
0.91" - Average rainfall in August:
0.91" - Average rainfall in September:
1.1" - Average rainfall in October:
0.71" - Average rainfall in November:
0.59" - Average rainfall in December:
0.51"
The wettest month (with the highest rainfall) is May (1.73").
The driest month (with the least rainfall) is February (0.43").
Average rainfall days
Tattnall, MT
- Average rainfall days in January:
3.9 days - Average rainfall days in February:
3.3 days - Average rainfall days in March:
7.3 days - Average rainfall days in April:
10.8 days - Average rainfall days in May:
12.7 days - Average rainfall days in June:
11.6 days
- Average rainfall days in July:
9.3 days - Average rainfall days in August:
9.2 days - Average rainfall days in September:
8.1 days - Average rainfall days in October:
7.3 days - Average rainfall days in November:
4.1 days - Average rainfall days in December:
4.2 days
The month with the highest number of rainy days is May (12.7 days).
The month with the least rainy days is February (3.3 days).
Average snowfall
Tattnall, MT
- Average snowfall in January:
3.19" - Average snowfall in February:
2.76" - Average snowfall in March:
2.2" - Average snowfall in April:
1.77" - Average snowfall in May:
0.31" - Average snowfall in June:
0"
The month with the highest snowfall is December (3.43").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Tattnall, MT
- Average snowfall days in January:
12.3 days - Average snowfall days in February:
11.3 days - Average snowfall days in March:
8 days - Average snowfall days in April:
4.2 days - Average snowfall days in May:
0.3 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:
0.1 days - Average snowfall days in October:
2 days - Average snowfall days in November:
6.9 days - Average snowfall days in December:
11.8 days
The month with the highest number of snowfall days is January (12.3 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight / Average sunshine
Tattnall, MT
- Average daylight in January:
8h and 5min - Average daylight in February:
10h and 1min - Average daylight in March:
11h and 5min - Average daylight in April:
13h and 4min - Average daylight in May:
15h and 2min - Average daylight in June:
16h and 1min
- Average daylight in July:
15h and 4min - Average daylight in August:
14h and 2min - Average daylight in September:
12h and 4min - Average daylight in October:
10h and 5min - Average daylight in November:
9h and 1min - Average daylight in December:
8h and 2min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in January:
4h and 5min - Average sunshine in February:
4h and 4min - Average sunshine in March:
6h and 2min - Average sunshine in April:
8h and 5min - Average sunshine in May:
10h and 0min - Average sunshine in June:
11h and 1min
- Average sunshine in July:
11h and 4min - Average sunshine in August:
11h and 3min - Average sunshine in September:
9h and 5min - Average sunshine in October:
6h and 2min - Average sunshine in November:
5h and 5min - Average sunshine in December:
4h and 5min
The month with the most sunshine is July (Average sunshine: 11h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days
Tattnall, MT
- Average sunshine days in January:
17.6 days - Average sunshine days in February:
15.7 days - Average sunshine days in March:
16 days - Average sunshine days in April:
15.4 days - Average sunshine days in May:
16.3 days - Average sunshine days in June:
16.9 days
- Average sunshine days in July:
19 days - Average sunshine days in August:
19.9 days - Average sunshine days in September:
20.6 days - Average sunshine days in October:
21 days - Average sunshine days in November:
19.7 days - Average sunshine days in December:
17.3 days
The month with the most sunshine days is October (21 days).
The month with the least sunshine days is April (15.4 days).
Average UV index
Tattnall, MT
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover
Tattnall, MT
The month with the most cloud cover is February (Cloud cover 50).
The months with the least cloud cover are July and August (Cloud cover 18).
Average visibility
Tattnall, MT
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Tattnall, Montana, USA
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