Climate and monthly weather forecastFishtail, MT
Climate and monthly weather forecast
Weather in January
January in Fishtail, Montana, is a cold winter month, with an average temperature varying between 18.7°F (-7.4°C) and 32°F (0°C). At the onset of January, Fishtail records an average high-temperature of an icy 32°F (0°C), showing little deviation from the preceding month. Weather in January »Weather in February
The last month of the winter, February, is also a wintry month in Fishtail, Montana, with an average temperature ranging between min 16.7°F (-8.5°C) and max 32.4°F (0.2°C). As Fishtail, Montana, steps into February, the average high-temperature holds at a still wintry 32.4°F (0.2°C), hinting at a minor fluctuation from the prior month. Weather in February »Weather in March
March, the first month of the spring in Fishtail, is a frosty month, with an average temperature fluctuating between 43.5°F (6.4°C) and 27.5°F (-2.5°C). As February transitions into March, a change in temperatures is observed, with average highs moving from a wintry 32.4°F (0.2°C) to a chilly 43.5°F (6.4°C). Weather in March »Weather in April
April in Fishtail, Montana, is a cool spring month, with an average temperature varying between 33.3°F (0.7°C) and 51.3°F (10.7°C). As April begins, there's a slight increase in the average high-temperature, moving from a chilly 43.5°F (6.4°C) in March to a fresh 51.3°F (10.7°C). Weather in April »Weather in May
May, the last month of the spring in Fishtail, is an enjoyable month, with temperature in the range of an average high of 61°F (16.1°C) and an average low of 41.4°F (5.2°C). The arrival of May brings an increase in high-temperatures, moving from a cool 51.3°F (10.7°C) in April to an enjoyable 61°F (16.1°C). Weather in May »Weather in June
June, the first month of the summer in Fishtail, is a pleasant month, with an average temperature ranging between max 72.7°F (22.6°C) and min 49.6°F (9.8°C). With the onset of June, Fishtail's average high-temperature sees a rise, moving from May's comfortable 61°F (16.1°C) to a pleasant 72.7°F (22.6°C). Weather in June »Weather in July
July in Fishtail, Montana, is a warm summer month, with temperature in the range of an average low of 57.2°F (14°C) and an average high of 82.9°F (28.3°C). With average high and low temperatures of 82.9°F (28.3°C) and 57.2°F (14°C) respectively, July is Fishtail's warmest month. Throughout July, the heat index is computed to be 82.4°F (28°C). Weather in July »Weather in August
August, the last month of the summer in Fishtail, is another warm month, with temperature in the range of an average low of 57.2°F (14°C) and an average high of 81.1°F (27.3°C). As Fishtail transitions into August, the average high-temperature stands at a still moderately hot 81.1°F (27.3°C), offering little variation from the preceding month. Weather in August »Weather in September
September, the first month of the autumn in Fishtail, is still a pleasant month, with an average temperature fluctuating between 72°F (22.2°C) and 50.2°F (10.1°C). September brings a decrease in the average high-temperature, falling from August's moderately hot 81.1°F (27.3°C) to an agreeable 72°F (22.2°C). Weather in September »Weather in October
October, like September, in Fishtail, Montana, is a cool autumn month, with an average temperature fluctuating between 37.9°F (3.3°C) and 55.2°F (12.9°C). Fishtail experiences a clear temperature downturn in October, with average high-temperatures moving from an agreeable 72°F (22.2°C) in September to a cool 55.2°F (12.9°C). Weather in October »Weather in November
The last month of the autumn, November, is another cold month in Fishtail, Montana, with an average temperature ranging between min 26.8°F (-2.9°C) and max 41.9°F (5.5°C). The transition into November involves a decrease in the average high-temperature, falling from a fresh 55.2°F (12.9°C) in October to a cold 41.9°F (5.5°C). Weather in November »Weather in December
The first month of the winter, December, is still a freezing cold month in Fishtail, Montana, with temperature in the range of an average high of 30.7°F (-0.7°C) and an average low of 17.4°F (-8.1°C). Fishtail witnesses the coldest weather in December, with temperatures averaging a high of 30.7°F (-0.7°C) and a low of 17.4°F (-8.1°C). Weather in December »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Fishtail, MT
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is December (30.7°F).
The months with the highest average low temperature are July and August (57.2°F).
The coldest month (with the lowest average low temperature) is February (16.7°F).
Average pressure
Fishtail, MT
- Average pressure in January:
30.15"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.01"Hg - Average pressure in April:
29.94"Hg - Average pressure in May:
29.93"Hg - Average pressure in June:
29.88"Hg
- Average pressure in July:
29.93"Hg - Average pressure in August:
29.94"Hg - Average pressure in September:
29.96"Hg - Average pressure in October:
30.02"Hg - Average pressure in November:
30.09"Hg - Average pressure in December:
30.15"Hg
The months with the highest atmospheric pressure are January and December (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed
Fishtail, MT
- Average wind speed in January:
8.7mph - Average wind speed in February:
7.8mph - Average wind speed in March:
7.7mph - Average wind speed in April:
7.9mph - Average wind speed in May:
7.1mph - Average wind speed in June:
6.6mph
- Average wind speed in July:
6.1mph - Average wind speed in August:
6mph - Average wind speed in September:
6.9mph - Average wind speed in October:
8mph - Average wind speed in November:
8.5mph - Average wind speed in December:
8.5mph
The windiest month (with the highest average wind speed) is January (8.7mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity
Fishtail, MT
The month with the highest relative humidity is January (76%).
The month with the lowest relative humidity is August (41%).
Average rainfall
Fishtail, MT
- Average rainfall in January:
0.51" - Average rainfall in February:
0.87" - Average rainfall in March:
1.1" - Average rainfall in April:
1.73" - Average rainfall in May:
2.09" - Average rainfall in June:
1.61"
- Average rainfall in July:
0.83" - Average rainfall in August:
0.75" - Average rainfall in September:
0.79" - Average rainfall in October:
1.1" - Average rainfall in November:
0.83" - Average rainfall in December:
0.63"
The wettest month (with the highest rainfall) is May (2.09").
The driest month (with the least rainfall) is January (0.51").
Average rainfall days
Fishtail, MT
- Average rainfall days in January:
6 days - Average rainfall days in February:
4 days - Average rainfall days in March:
9.3 days - Average rainfall days in April:
13 days - Average rainfall days in May:
16.3 days - Average rainfall days in June:
12.1 days
- Average rainfall days in July:
9.4 days - Average rainfall days in August:
10.8 days - Average rainfall days in September:
6.9 days - Average rainfall days in October:
8 days - Average rainfall days in November:
6.1 days - Average rainfall days in December:
6.2 days
The month with the highest number of rainy days is May (16.3 days).
The month with the least rainy days is February (4 days).
Average snowfall
Fishtail, MT
- Average snowfall in January:
3.58" - Average snowfall in February:
6.81" - Average snowfall in March:
5.91" - Average snowfall in April:
6.18" - Average snowfall in May:
2.83" - Average snowfall in June:
0.12"
The month with the highest snowfall is February (6.81").
The months with the least snowfall are July and August (0").
Average snowfall days
Fishtail, MT
- Average snowfall days in January:
9.9 days - Average snowfall days in February:
10.8 days - Average snowfall days in March:
8.5 days - Average snowfall days in April:
6.6 days - Average snowfall days in May:
2.4 days - Average snowfall days in June:
0.1 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0.8 days - Average snowfall days in October:
4.6 days - Average snowfall days in November:
8.2 days - Average snowfall days in December:
9.6 days
The month with the highest number of snowfall days is February (10.8 days).
The months with the least snowfall days are July and August (0 days).
Average daylight / Average sunshine
Fishtail, MT
- Average daylight in January:
9h and 12min - Average daylight in February:
10h and 24min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 36min - Average daylight in May:
14h and 54min - Average daylight in June:
15h and 36min
- Average daylight in July:
15h and 18min - Average daylight in August:
14h and 0min - Average daylight in September:
12h and 30min - Average daylight in October:
10h and 54min - Average daylight in November:
9h and 30min - Average daylight in December:
8h and 48min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in January:
6h and 24min - Average sunshine in February:
6h and 12min - Average sunshine in March:
8h and 24min - Average sunshine in April:
10h and 6min - Average sunshine in May:
10h and 30min - Average sunshine in June:
11h and 36min
- Average sunshine in July:
11h and 54min - Average sunshine in August:
11h and 42min - Average sunshine in September:
10h and 36min - Average sunshine in October:
6h and 54min - Average sunshine in November:
6h and 36min - Average sunshine in December:
6h and 24min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 6h and 12min).
Average sunshine days
Fishtail, MT
- Average sunshine days in January:
19.3 days - Average sunshine days in February:
15.2 days - Average sunshine days in March:
16.3 days - Average sunshine days in April:
11.4 days - Average sunshine days in May:
10.5 days - Average sunshine days in June:
13.3 days
- Average sunshine days in July:
12.4 days - Average sunshine days in August:
12.3 days - Average sunshine days in September:
18.4 days - Average sunshine days in October:
18.1 days - Average sunshine days in November:
18.7 days - Average sunshine days in December:
19.7 days
The month with the most sunshine days is December (19.7 days).
The month with the least sunshine days is May (10.5 days).
Average UV index
Fishtail, MT
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover
Fishtail, MT
The month with the most cloud cover is February (Cloud cover 38).
The months with the least cloud cover are July and August (Cloud cover 15).
Average visibility
Fishtail, MT
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).





