When is the best time to go to Thermopolis
The chart above shows the best time of year to visit Thermopolis, United States. These are based on an analysis of weather averages such as temperature, rainfall and number of hours of sunshine. These ratings are based solely on the climate and do not take into account other factors such as accommodation prices and how busy it is likely to be.
Average temperatures in Thermopolis
Thermopolis weather by month
Please note our recommendations for when to visit Thermopolis are based solely on the weather and do not take into accounts accommodation prices, how busy it will be and what events are on.
January
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| -1°C | 6mm | 6.3hrs | 10.4hrs |
January is a very dry month in Thermopolis and the temperature is generally cold.
Based on weather alone, this is probably a time of year to avoid going to Thermopolis for your holidays. The weather is often pretty bad and not conducive to spending time outdoors.
January is in the winter in Thermopolis and is typically the coldest month of the year. Daytime maximum temperatures average around a freezing -1°C (30°F), whilst at night -16°C (4°F) is normal.
On average January is the driest month of the year in Thermopolis with around 6mm 0.2 inches of rain making it a very dry time to visit.
On the flip side this corresponds to an average of 6.3 hours of sunshine per day.
Thermopolis weather in January »
February
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 3°C | 6mm | 7.3hrs | 11.5hrs |
February in Thermopolis is generally very dry with the temperature being cold.
Based on weather alone, this is probably a time of year to avoid going to Thermopolis for your holidays. The weather is often not a good and not conducive to spending time outdoors.
February is in the winter in Thermopolis and is typically the 2nd coldest month of the year. Daytime maximum temperatures average around a freezing 3°C (38°F), whilst at night -12°C (11°F) is normal.
On average February is the 2nd driest month of the year in Thermopolis with around 6mm 0.2 inches of rain making it a very dry time to visit.
On the flip side this corresponds to an average of 7.3 hours of sunshine per day.
Thermopolis weather in February »
March
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 8°C | 9mm | 8.6hrs | 12.8hrs |
The weather in March in Thermopolis is characteristically cool and very dry.
Based on weather alone, this is probably a time of year to avoid going to Thermopolis for your holidays. The weather is often pretty bad and not conducive to spending time outdoors.
March is in the spring in Thermopolis and is typically the 3rd coldest month of the year. Daytime maximum temperatures average around a cold 9°C (48°F), whilst at night -6°C (21°F) is normal.
On average March is the 3rd driest month of the year in Thermopolis with around 9mm 0.4 inches of rain making it a very dry time to visit.
On the flip side this corresponds to an average of 8.6 hours of sunshine per day.
Thermopolis weather in March »
April
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 13°C | 22mm | 9.3hrs | 14.4hrs |
Thermopolis's weather in April is typically cool and dry in nature.
Although outside the main holiday season, there is still plenty of reasonably acceptable weather around this time of year. This makes it an okay time to visit Thermopolis.
April is in the spring in Thermopolis and is typically the 4th coldest month of the year. Daytime maximum temperatures average around a cool 15°C (59°F), whilst at night -1°C (30°F) is normal.
On average April is the 4th driest month of the year in Thermopolis with around 22mm 0.9 inches of rain making it a dry time to visit. This rainfall is typically spread over 10 days, although this may vary considerably.
On the flip side this corresponds to an average of 9.3 hours of sunshine per day.
Thermopolis weather in April »
May
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 18°C | 41mm | 9.9hrs | 15.7hrs |
May is a reasonably dry month in Thermopolis and the temperature is generally mild.
Although outside the main holiday season, there is still plenty of reasonably acceptable weather around this time of year. This makes it an okay time to visit Thermopolis.
May is in the spring in Thermopolis and is typically the 5th coldest month of the year. Daytime maximum temperatures average around a cool 20°C (69°F), whilst at night 4°C (39°F) is normal.
On average May is the 5th driest month of the year in Thermopolis with around 41mm 1.6 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 10 days, although this may vary considerably.
On the flip side this corresponds to an average of 9.9 hours of sunshine per day.
June
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 24°C | 33mm | 11.4hrs | 10.4hrs |
June in Thermopolis is generally reasonably dry with the temperature being mild.
It is perhaps a good month to visit Thermopolis, with some inordinately good weather at this time of year.
June is in the summer in Thermopolis and is typically the 6th coldest month of the year. Daytime maximum temperatures average around a comfortable 26°C (79°F), whilst at night 9°C (48°F) is normal.
On average June is the 6th driest month of the year in Thermopolis with around 33mm 1.3 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 8 days, although this may vary considerably.
On the flip side this corresponds to an average of 11.4 hours of sunshine per day.
July
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 28°C | 17mm | 12hrs | 11.5hrs |
July in Thermopolis is generally dry with the temperature being warm.
It is perhaps a good month to visit Thermopolis, with some extremely good weather at this time of year.
July is in the summer in Thermopolis and is typically the 6th warmest month of the year. Daytime maximum temperatures average around a comfortable 31°C (87°F), whilst at night 12°C (54°F) is normal.
On average July is the 6th wettest month of the year in Thermopolis with around 17mm 0.7 inches of rain making it a dry time to visit. This rainfall is typically spread over 7 days, although this may vary considerably.
On the flip side this corresponds to an average of 12 hours of sunshine per day.
August
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 27°C | 13mm | 11.3hrs | 12.8hrs |
The weather in August in Thermopolis is characteristically warm and dry.
It is perhaps the perfect month to visit Thermopolis, with some inordinately good weather at this time of year.
August is in the summer in Thermopolis and is typically the 5th warmest month of the year. Daytime maximum temperatures average around a comfortable 30°C (85°F), whilst at night 11°C (51°F) is normal.
On average August is the 5th wettest month of the year in Thermopolis with around 13mm 0.5 inches of rain making it a dry time to visit. This rainfall is typically spread over 6 days, although this may vary considerably.
On the flip side this corresponds to an average of 11.3 hours of sunshine per day.
Thermopolis weather in August »
September
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 21°C | 20mm | 9.6hrs | 14.4hrs |
Thermopolis's weather in September is typically mild and dry in nature.
It is perhaps the perfect month to visit Thermopolis, with some extremely good weather at this time of year.
September is in the fall / autumn in Thermopolis and is typically the 4th warmest month of the year. Daytime maximum temperatures average around 23°C (73°F), whilst at night 5°C (41°F) is normal.
On average September is the 4th wettest month of the year in Thermopolis with around 20mm 0.8 inches of rain making it a dry time to visit. This rainfall is typically spread over 6 days, although this may vary considerably.
On the flip side this corresponds to an average of 9.6 hours of sunshine per day.
Thermopolis weather in September »
October
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 14°C | 14mm | 7.8hrs | 15.7hrs |
October is a dry month in Thermopolis and the temperature is generally cool.
Although outside the main holiday season, there is still plenty of pretty acceptable weather around this time of year. This makes it an okay time to visit Thermopolis.
October is in the fall / autumn in Thermopolis and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around a cool 16°C (61°F), whilst at night -1°C (31°F) is normal.
On average October is the 3rd wettest month of the year in Thermopolis with around 14mm 0.6 inches of rain making it a dry time to visit. This rainfall is typically spread over 6 days, although this may vary considerably.
On the flip side this corresponds to an average of 7.8 hours of sunshine per day.
Thermopolis weather in October »
November
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 6°C | 9mm | 5.9hrs | 10.4hrs |
The weather in November in Thermopolis is characteristically cold and very dry.
Based on weather alone, this is probably a time of year to avoid going to Thermopolis for your holidays. The weather is often not a good and not conducive to spending time outdoors.
November is in the fall / autumn in Thermopolis and is typically the 2nd warmest month of the year. Daytime maximum temperatures average around a freezing 6°C (43°F), whilst at night -8°C (17°F) is normal.
On average November is the 2nd wettest month of the year in Thermopolis with around 9mm 0.4 inches of rain making it a very dry time to visit.
On the flip side this corresponds to an average of 5.9 hours of sunshine per day.
Thermopolis weather in November »
December
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| -0°C | 6mm | 5.8hrs | 11.5hrs |
December in Thermopolis is generally very dry with the temperature being cold.
Based on weather alone, this is probably a time of year to avoid going to Thermopolis for your holidays. The weather is often relatively bad and not conducive to spending time outdoors.
December is in the winter in Thermopolis and is typically the warmest month of the year. Daytime maximum temperatures average around a freezing -0°C (31°F), whilst at night -14°C (6°F) is normal.
On average December is the wettest month of the year in Thermopolis with around 6mm 0.2 inches of rain making it a very dry time to visit.
On the flip side this corresponds to an average of 5.8 hours of sunshine per day.
Other monthly averages
Thermopolis weather stats
| Hottest month: | July | 30.4°C 86.7°F |
|---|---|---|
| Driest month: | February | 6mm 0.2ins |
| Sunniest month: | August | 11.3hrs |
| Coldest month: | January | -1.7°C 28.9°F |
| Wettest month: | May | 41mm 1.6ins |
| Warmest sea: | August | 16.3°C 61.3°F |
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