When is the best time to go to Rockville
The chart above shows the best time of year to visit Rockville, 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 Rockville
Rockville weather by month
Please note our recommendations for when to visit Rockville 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 |
|---|---|---|---|
| 2°C | 64mm | 5hrs | 10.7hrs |
The climate in Rockville during January can be summarized as cold and reasonably dry.
Based on weather alone, this is probably a time of year to avoid going to Rockville for your holidays. The weather is often relatively bad and not conducive to spending time outdoors.
January is in the winter in Rockville and is typically the coldest month of the year. Daytime maximum temperatures average around a freezing 2°C (35°F), whilst at night -9°C (17°F) is normal.
On average January is the driest month of the year in Rockville with around 64mm 2.5 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 11 days, although this may vary considerably.
On the flip side this corresponds to an average of 5 hours of sunshine per day.
Rockville weather in January »
February
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 4°C | 56mm | 5.7hrs | 11.7hrs |
February in Rockville is generally reasonably dry with the temperature being cold.
Based on weather alone, this is probably a time of year to avoid going to Rockville for your holidays. The weather is often relatively bad and not conducive to spending time outdoors.
February is in the winter in Rockville and is typically the 2nd coldest month of the year. Daytime maximum temperatures average around a freezing 5°C (40°F), whilst at night -6°C (21°F) is normal.
On average February is the 2nd driest month of the year in Rockville with around 56mm 2.2 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 5.7 hours of sunshine per day.
Rockville weather in February »
March
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 10°C | 92mm | 6.5hrs | 12.8hrs |
The weather in March in Rockville is characteristically cool and a little damp.
Based on weather alone, this is probably a time of year to avoid going to Rockville for your holidays. The weather is often not a good and not conducive to spending time outdoors.
March is in the spring in Rockville and is typically the 3rd coldest month of the year. Daytime maximum temperatures average around a cool 12°C (53°F), whilst at night -0°C (32°F) is normal.
On average March is the 3rd driest month of the year in Rockville with around 92mm 3.6 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 13 days, although this may vary considerably.
On the flip side this corresponds to an average of 6.5 hours of sunshine per day.
April
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 17°C | 107mm | 7.9hrs | 14.2hrs |
Rockville's weather in April is typically mild and damp in nature.
Based on weather alone, this is probably a time of year to avoid going to Rockville for your holidays. The weather is often pretty bad and not conducive to spending time outdoors.
April is in the spring in Rockville and is typically the 4th coldest month of the year. Daytime maximum temperatures average around a cool 19°C (66°F), whilst at night 5°C (42°F) is normal.
On average April is the 4th driest month of the year in Rockville with around 107mm 4.2 inches of rain making it a damp time to visit. This rainfall is typically spread over 12 days, although this may vary considerably.
On the flip side this corresponds to an average of 7.9 hours of sunshine per day.
May
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 22°C | 113mm | 9.5hrs | 15.3hrs |
May is a damp month in Rockville and the temperature is generally mild.
Although outside the main holiday season, there is still plenty of relatively acceptable weather around this time of year. This makes it an okay time to visit Rockville.
May is in the spring in Rockville and is typically the 5th coldest month of the year. Daytime maximum temperatures average around a comfortable 24°C (76°F), whilst at night 11°C (51°F) is normal.
On average May is the 5th driest month of the year in Rockville with around 113mm 4.4 inches of rain making it a damp time to visit. This rainfall is typically spread over 11 days, although this may vary considerably.
On the flip side this corresponds to an average of 9.5 hours of sunshine per day.
June
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 26°C | 103mm | 10.8hrs | 10.7hrs |
Rockville's weather in June is typically warm and damp in nature.
It is perhaps a good month to visit Rockville, with some extremely good weather at this time of year.
June is in the summer in Rockville and is typically the 6th coldest month of the year. Daytime maximum temperatures average around a comfortable 29°C (84°F), whilst at night 16°C (60°F) is normal.
On average June is the 6th driest month of the year in Rockville with around 103mm 4 inches of rain making it a damp time to visit. This rainfall is typically spread over 9 days, although this may vary considerably.
On the flip side this corresponds to an average of 10.8 hours of sunshine per day.
July
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 28°C | 121mm | 10.7hrs | 11.7hrs |
July in Rockville is generally wet with the temperature being hot.
Based on weather alone, this is probably a time of year to avoid going to Rockville for your holidays. The weather is often relatively bad and not conducive to spending time outdoors.
July is in the summer in Rockville and is typically the 6th warmest month of the year. Daytime maximum temperatures average around a muggy 31°C (87°F), whilst at night 18°C (64°F) is normal.
On average July is the 6th wettest month of the year in Rockville with around 121mm 4.8 inches of rain making it a wet time to visit. This rainfall is typically spread over 9 days, although this may vary considerably.
On the flip side this corresponds to an average of 10.7 hours of sunshine per day.
August
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 27°C | 95mm | 9.9hrs | 12.8hrs |
The weather in August in Rockville is characteristically hot, humid and a little damp.
It is perhaps the perfect month to visit Rockville, with some inordinately good weather at this time of year.
August is in the summer in Rockville and is typically the 5th warmest month of the year. Daytime maximum temperatures average around a muggy 30°C (85°F), whilst at night 17°C (62°F) is normal.
On average August is the 5th wettest month of the year in Rockville with around 95mm 3.7 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 9 days, although this may vary considerably.
On the flip side this corresponds to an average of 9.9 hours of sunshine per day.
September
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 24°C | 81mm | 8.6hrs | 14.2hrs |
Rockville's weather in September is typically warm and a little damp in nature.
It is perhaps the perfect month to visit Rockville, with some very good weather at this time of year.
September is in the fall / autumn in Rockville and is typically the 4th warmest month of the year. Daytime maximum temperatures average around 26°C (79°F), whilst at night 13°C (55°F) is normal.
On average September is the 4th wettest month of the year in Rockville with around 81mm 3.2 inches of rain making it a a little damp 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 8.6 hours of sunshine per day.
Rockville weather in September »
October
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 18°C | 71mm | 7.2hrs | 15.3hrs |
October is a reasonably dry month in Rockville 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 Rockville.
October is in the fall / autumn in Rockville and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around 20°C (68°F), whilst at night 7°C (44°F) is normal.
On average October is the 3rd wettest month of the year in Rockville with around 71mm 2.8 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 7.2 hours of sunshine per day.
Rockville weather in October »
November
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 11°C | 96mm | 4.6hrs | 10.7hrs |
Cool and a little damp weather often prevails in Rockville during the month of November
Based on weather alone, this is probably a time of year to avoid going to Rockville for your holidays. The weather is often pretty bad and not conducive to spending time outdoors.
November is in the fall / autumn in Rockville and is typically the 2nd warmest month of the year. Daytime maximum temperatures average around a cool 12°C (54°F), whilst at night 2°C (35°F) is normal.
On average November is the 2nd wettest month of the year in Rockville with around 96mm 3.8 inches of rain making it a a little damp 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 4.6 hours of sunshine per day.
Rockville weather in November »
December
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 4°C | 88mm | 4hrs | 11.7hrs |
December in Rockville is generally a little damp with the temperature being cold.
Based on weather alone, this is probably a time of year to avoid going to Rockville for your holidays. The weather is often not a good and not conducive to spending time outdoors.
December is in the winter in Rockville and is typically the warmest month of the year. Daytime maximum temperatures average around a freezing 4°C (40°F), whilst at night -5°C (23°F) is normal.
On average December is the wettest month of the year in Rockville with around 88mm 3.5 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 12 days, although this may vary considerably.
On the flip side this corresponds to an average of 4 hours of sunshine per day.
Other monthly averages
Rockville weather stats
| Hottest month: | July | 30.3°C 86.5°F |
|---|---|---|
| Driest month: | February | 56mm 2.2ins |
| Sunniest month: | July | 10.7hrs |
| Coldest month: | January | 1.4°C 34.5°F |
| Wettest month: | July | 121mm 4.8ins |
| Warmest sea: | August | 23.1°C 73.6°F |
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