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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 another subzero cold winter month in Tattnall, Montana, with an average temperature varying between 10.8°F (-11.8°C) and 24.6°F (-4.1°C). January welcomes an average high-temperature of a still subzero cold 24.6°F (-4.1°C), not much different from the preceding month. Weather in January »
Weather in February
The last month of the winter, February, is also a subzero cold month in Tattnall, Montana, with temperature in the range of an average low of 10°F (-12.2°C) and an average high of 24.4°F (-4.2°C). February stands out as Tattnall's coldest month, with an average high-temperature of 24.4°F (-4.2°C) and a low-temperature of 10°F (-12.2°C). Weather in February »
Weather in March
The first month of the spring, March, is a cold month in Tattnall, Montana, with an average temperature ranging between max 38.3°F (3.5°C) and min 24.3°F (-4.3°C). Tattnall's transition into March is marked by a temperature shift, moving from a subzero cold 24.4°F (-4.2°C) in February to an icy 38.3°F (3.5°C). Weather in March »
Weather in April
April is a fresh spring month in Tattnall, Montana, with an average temperature ranging between max 53.1°F (11.7°C) and min 36.1°F (2.3°C). The beginning of April signals a clear escalation in the average high-temperature, soaring from an icy 38.3°F (3.5°C) in March to a fresh 53.1°F (11.7°C). Weather in April »
Weather in May
May, the last month of the spring in Tattnall, is an enjoyable month, with an average temperature ranging between min 46.9°F (8.3°C) and max 65.8°F (18.8°C). Tattnall's weather in May presents a rise in the average high-temperature, moving from a fresh 53.1°F (11.7°C) in April to a comfortable 65.8°F (18.8°C). Weather in May »
Weather in June
The first month of the summer, June, is a moderately hot month in Tattnall, Montana, with an average temperature fluctuating between 75°F (23.9°C) and 55.4°F (13°C). A shift in the average high-temperature is noticeable in June, changing 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, like June, in Tattnall, Montana, is another warm summer month, with temperature in the range of an average high of 84°F (28.9°C) and an average low of 63.1°F (17.3°C). July, with its high-temperature average of 84°F (28.9°C) and a low-temperature average of 63.1°F (17.3°C), is the warmest month. July's average heat index is calculated to be 84.2°F (29°C). Weather in July »
Weather in August
August, the last month of the summer in Tattnall, is another warm month, with temperature in the range of an average high of 82.8°F (28.2°C) and an average low of 62.1°F (16.7°C). With the advent of August, Tattnall experiences an average high-temperature of a still moderately hot 82.8°F (28.2°C), mirroring a close resemblance to the previous month. Weather in August »
Weather in September
The first month of the autumn, September, is also an agreeable month in Tattnall, Montana, with an average temperature varying between 71.1°F (21.7°C) and 53.2°F (11.8°C). September weather is marked by a drop in the average high-temperature, falling 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, like September, in Tattnall, Montana, is another fresh autumn month, with an average temperature varying between 54.3°F (12.4°C) and 39.4°F (4.1°C). The onset of October witnesses a clear shift in the average high-temperature, dropping from a pleasant 71.1°F (21.7°C) in September to a cool 54.3°F (12.4°C). Weather in October »
Weather in November
November, the last month of the autumn in Tattnall, is also an icy month, with an average temperature varying between 38.8°F (3.8°C) and 25.7°F (-3.5°C). In Tattnall, the average high-temperature in November significantly decreases from a cool 54.3°F (12.4°C) in October to an icy 38.8°F (3.8°C). Weather in November »
Weather in December
The first month of the winter, December, is also a subzero cold month in Tattnall, Montana, with an average temperature ranging between min 12.7°F (-10.7°C) and max 24.8°F (-4°C). Tattnall's progression into December includes a drop in the average high-temperature, from a wintry 38.8°F (3.8°C) in November to a subzero cold 24.8°F (-4°C). Weather in December »
Updated: Aug 18, 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?
The most humid month is January, with an average relative humidity of 85%.
How much does it rain?
Throughout the year, there are 91.8 rainfall days, and 10.63" (270mm) of precipitation is accumulated.
When does it snow?
January through May, October through December are months with snowfall.
How many days does it snow?
In Tattnall, during the entire year, snow falls for 56.9 days and aggregates up to 17.95" (456mm) of snow.
When is 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 part of the year is the coldest?
Temperature readings reach their annual highs in February, averaging 24.4°F (-4.2°C) and a minimum average of 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?
February has the least sunshine of the year, 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?
With an average of 16h and 6min of daylight, June has the longest days of the year.
What time of the year is the hottest?
In Tattnall, temperatures reach their average annual highs in July, measuring 84°F (28.9°C) and a minimum average of 63.1°F (17.3°C).
What month has the most sunshine?
July has the most sunshine of the year, with an average of 11.7h of sunshine.
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.
What is the snowiest month?
The month with the most snowfall is December, when snow falls for 11.8 days and typically aggregates up to 3.43" (87mm) of snow.
What is the month with the shortest days?
With an average of 8h and 24min of daylight, December has the shortest days of the year.
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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