Guilford (CT) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Guilford.
Climate overview of Guilford
Guilford, Connecticut, United States of America, experiences significant temperature variation throughout the year. Summers bring daytime highs of 29°C (84°F) in July, while winters cool to 4°C (39°F) in January.
Rain/snowfall is high, totalling around 1237 mm (49 in) per year. June is the wettest month and November the driest. The city also experiences warm summers and cold winters. The most sunshine falls in July, with an average of 9.8 hours of daily sunshine.
Guilford Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Guilford - and find the best time to visit.
Monthly Temperature in Guilford
Depending on the time of the year, temperatures range from comfortable to chilly in Guilford. Average maximum daytime temperatures range from a comfortable 29°C (84°F) in July, the warmest time of the year, to a chilly 4°C (39°F) during cooler months like January.
At night, you can expect temperatures ranging from 19°C (66°F) in July to around -5°C (23°F) during January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Guilford
Guilford has a relatively rain/snowy climate with high precipitation levels, averaging 1237 mm (49 in) of rain/snowfall annually. Year-round, Guilford has a balanced climate with minimal variation in precipitation. The difference between the wettest month, June, with 128 mm (5 in), and the driest month, November, with 89 mm (3.5 in), is minimal. For more details, please visit our Guilford Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Guilford
Seasonal changes in sunshine hours are quite dramatic in Guilford. While July receives considerable daily sunshine with up to 9.8 hours, November marks the darkest time of the year, where sunshine is scarce with only 4.6 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Humidity in Guilford by Month
The relative humidity is high throughout the year in Guilford.
The city experiences its highest humidity in September, reaching 72%. In April, the humidity drops to its lowest level at 58%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Guilford
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: May, July and September
- Warmest weather: July and August
- Most sunshine: July
- Seasonal pattern: Warm summers and cold winters
- Coldest conditions: January, with freezing nights around -5°C (23°F).
Frequently asked questions about the climate in Guilford
What is the best time to visit Guilford?
May, July and September typically offer the most optimal weather in Guilford. In contrast, January, February, March and December tend to have less optimal conditions. Guilford has warm summers and cold winters.
What temperatures can I expect in Guilford?
Daytime highs range from 4°C (39°F) in January to 29°C (84°F) in July. Nighttime lows range from -5°C (23°F) to 19°C (66°F). Temperatures vary considerably through the year.
How much rain does Guilford get?
Annual rainfall is around 1237 mm (49 in). June is the wettest month with 128 mm (5 in), while November is the driest with 89 mm (3.5 in).
How sunny is Guilford?
Guilford receives around 2,579 hours of sunshine per year. July is the sunniest month with 293 hours, while November is the cloudiest with just 139 hours. Overall, Guilford enjoys abundant sunshine.
Guilford 3-Day Forecast
Guilford (CT) 3-Day Forecast
Guilford on the map
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