Best time to visit Dalton
The best time to visit Dalton is September, judged on twenty years of weather records and the events worth going for.
Dalton, Massachusetts, United States
°C
mm
- Average daily high and low
- Precipitation
- Good month
- Best month
- Made good or best by an event
| Month | Average daily high | Average daily low | Precipitation | Verdict |
|---|---|---|---|---|
| January | -0.9 °C / 30 °F | -8.8 °C / 16 °F | 87 mm / 3.4 in | neither best nor good |
| February | 0.4 °C / 33 °F | -8.3 °C / 17 °F | 90 mm / 3.5 in | neither best nor good |
| March | 5.5 °C / 42 °F | -3.6 °C / 26 °F | 98 mm / 3.9 in | neither best nor good |
| April | 12.6 °C / 55 °F | 2.7 °C / 37 °F | 109 mm / 4.3 in | neither best nor good |
| May | 19.1 °C / 66 °F | 9 °C / 48 °F | 100 mm / 3.9 in | good month |
| June | 23.1 °C / 74 °F | 13.5 °C / 56 °F | 110 mm / 4.3 in | good month |
| July | 26.4 °C / 80 °F | 16.9 °C / 62 °F | 110 mm / 4.3 in | good month |
| August | 25.1 °C / 77 °F | 15.5 °C / 60 °F | 100 mm / 3.9 in | good month |
| September | 21.5 °C / 71 °F | 11.4 °C / 53 °F | 96 mm / 3.8 in | best month |
| October | 14.7 °C / 58 °F | 5.6 °C / 42 °F | 123 mm / 4.9 in | neither best nor good |
| November | 7.7 °C / 46 °F | -0.5 °C / 31 °F | 83 mm / 3.3 in | neither best nor good |
| December | 1.9 °C / 35 °F | -5.3 °C / 22 °F | 117 mm / 4.6 in | neither best nor good |
Good and best months depend on more than temperature, rain and events. How they are chosen
Each activity on this page has its own good and best months, rated on twenty years of daily weather records. Which measures count, and how much, depends on the activity: humidity for exploring outdoors, wind for the beach, hiking and skiing, snow for skiing alone. Between them, the activities are rated on:
- Daytime highs
- Night-time lows
- How warm it feels
- Humidity
- How much of the day is sunny
- Hours of daylight
- Monthly rainfall
- How many days it rains
- Days of heavy rain
- Wind
- Snowfall and days with snow
- Major events, such as festivals
The chart shows the good and best months for exploring outdoors.
The event icon marks a month that an event lifts to good or best, such as a festival or a natural spectacle. Choose “Weather only” in the toolbar to rate the months on weather alone.
Best months by activity
Exploring outdoors
Mild days and nights, mostly dry and bright. The default for 'when should I go'.
- JJanuary: neither
- FFebruary: neither
- MMarch: neither
- AApril: neither
- MMay: good
- JJune: good
- JJuly: good
- AAugust: good
- SSeptember: best
- OOctober: neither
- NNovember: neither
- DDecember: neither
- Best
- September
- Good
- May–August
Why these months
May · good
In its favour: feels like (high) 17.6 °C / 64 °F, average daily high 19.1 °C / 66 °F, share of daylight that is sunny 69%, precipitation 100 mm / 3.9 in, days with heavy rain 3.4 days, relative humidity 66%, average daily low 9 °C / 48 °F.
Against: wet days 12.4 days.
June · good
In its favour: feels like (high) 23.3 °C / 74 °F, average daily high 23.1 °C / 74 °F, share of daylight that is sunny 72%, precipitation 110 mm / 4.3 in, average daily low 13.5 °C / 56 °F, days with heavy rain 3.9 days, relative humidity 70%.
Against: wet days 13.7 days.
July · good
In its favour: feels like (high) 27.6 °C / 82 °F, share of daylight that is sunny 79%, average daily high 26.4 °C / 80 °F, precipitation 110 mm / 4.3 in, average daily low 16.9 °C / 62 °F, relative humidity 70%, days with heavy rain 4.3 days.
Against: wet days 12.2 days.
August · good
In its favour: feels like (high) 25.7 °C / 78 °F, average daily high 25.1 °C / 77 °F, share of daylight that is sunny 81%, precipitation 100 mm / 3.9 in, days with heavy rain 3.2 days, average daily low 15.5 °C / 60 °F, wet days 10.9 days, relative humidity 71%.
September · best
In its favour: feels like (high) 21 °C / 70 °F, average daily high 21.5 °C / 71 °F, share of daylight that is sunny 74%, precipitation 96 mm / 3.8 in, wet days 8.9 days, days with heavy rain 3.1 days, average daily low 11.4 °C / 53 °F, relative humidity 74%.
Hiking and trekking
Cool enough to climb in, dry enough to enjoy, long enough days.
- JJanuary: neither
- FFebruary: neither
- MMarch: neither
- AApril: good
- MMay: best
- JJune: good
- JJuly: neither
- AAugust: good
- SSeptember: best
- OOctober: good
- NNovember: neither
- DDecember: neither
- Best
- May, September
- Good
- April, June, August, October
Why these months
April · good
In its favour: average daily high 12.6 °C / 55 °F, precipitation 109 mm / 4.3 in, share of daylight that is sunny 69%, daylight per day 13.4 h, average daily low 2.7 °C / 37 °F, feels like (high) 9.2 °C / 49 °F, days with heavy rain 3.5 days, wind (daily max) 19 km/h / 12 mph.
Against: wet days 13.2 days.
May · best
In its favour: average daily high 19.1 °C / 66 °F, precipitation 100 mm / 3.9 in, feels like (high) 17.6 °C / 64 °F, average daily low 9 °C / 48 °F, share of daylight that is sunny 69%, daylight per day 14.6 h, days with heavy rain 3.4 days, wet days 12.4 days, wind (daily max) 16 km/h / 10 mph.
June · good
In its favour: average daily high 23.1 °C / 74 °F, precipitation 110 mm / 4.3 in, average daily low 13.5 °C / 56 °F, share of daylight that is sunny 72%, daylight per day 15.2 h, feels like (high) 23.3 °C / 74 °F, days with heavy rain 3.9 days, wind (daily max) 15 km/h / 9 mph.
Against: wet days 13.7 days.
August · good
In its favour: precipitation 100 mm / 3.9 in, average daily high 25.1 °C / 77 °F, share of daylight that is sunny 81%, daylight per day 13.9 h, wet days 10.9 days, days with heavy rain 3.2 days, average daily low 15.5 °C / 60 °F, wind (daily max) 13 km/h / 8 mph, feels like (high) 25.7 °C / 78 °F.
September · best
In its favour: average daily high 21.5 °C / 71 °F, precipitation 96 mm / 3.8 in, wet days 8.9 days, feels like (high) 21 °C / 70 °F, average daily low 11.4 °C / 53 °F, share of daylight that is sunny 74%, daylight per day 12.5 h, days with heavy rain 3.1 days, wind (daily max) 14 km/h / 8 mph.
October · good
In its favour: average daily high 14.7 °C / 58 °F, feels like (high) 12.3 °C / 54 °F, average daily low 5.6 °C / 42 °F, share of daylight that is sunny 67%, precipitation 123 mm / 4.9 in, wet days 10.7 days, daylight per day 11 h, days with heavy rain 4 days, wind (daily max) 16 km/h / 10 mph.
An activity is listed only where it applies: skiing at ski destinations, beach and swimming at beach destinations. The nearest ski area is Jiminy Peak Resort, 12 km away.
Weather averages
Monthly averages over twenty years, 2006–2025. Highs, lows and precipitation are in the chart at the top.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Feels like (high) | -5.4 °C | -4.3 °C | 1.1 °C | 9.2 °C | 17.6 °C | 23.3 °C | 27.6 °C | 25.7 °C | 21 °C | 12.3 °C | 4 °C | -2.3 °C |
| Days with heavy rain | 3 days | 3 days | 3.2 days | 3.5 days | 3.4 days | 3.9 days | 4.3 days | 3.2 days | 3.1 days | 4 days | 3.1 days | 4.2 days |
| Time rain usually falls | 1 pm | 12 pm | 11 pm | 2 pm | 4 pm | 4 pm | 5 pm | 5 pm | 1 pm | 4 pm | 8 am | 5 am |
| Sunshine per day | 6.4 h | 7.3 h | 8.4 h | 9.2 h | 10.1 h | 11 h | 11.7 h | 11.2 h | 9.3 h | 7.4 h | 6.6 h | 5.5 h |
| Relative humidity | 70% | 67% | 62% | 61% | 66% | 70% | 70% | 71% | 74% | 74% | 70% | 74% |
Air quality
Averaged over a shorter period (2022–2025) than the twenty-year averages above, and not counted towards good or best months.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Air pollution (PM2.5) 2022–2025 | 4.9 µg/m³ | 5.9 µg/m³ | 6.3 µg/m³ | 6.7 µg/m³ | 7.7 µg/m³ | 12.9 µg/m³ | 11.7 µg/m³ | 9.1 µg/m³ | 7.2 µg/m³ | 4.9 µg/m³ | 4.4 µg/m³ | 4.8 µg/m³ |
| Air pollution (PM2.5, daily peak) 2022–2025 | 9.3 µg/m³ | 11.2 µg/m³ | 11.8 µg/m³ | 11.8 µg/m³ | 13.5 µg/m³ | 21.3 µg/m³ | 18.6 µg/m³ | 14.5 µg/m³ | 11.7 µg/m³ | 8.5 µg/m³ | 8.5 µg/m³ | 9.4 µg/m³ |
- Good 15 µg/m³ or less
- Fair 15 to 25 µg/m³
- Moderate 25 to 37.5 µg/m³
- Poor 37.5 to 50 µg/m³
- Very poor 50 to 75 µg/m³
- Extremely poor over 75 µg/m³
Each figure is compared with the World Health Organization's guideline for a day's air, 15 µg/m³ or less, and with its interim targets above that. The words are ours: the WHO does not name its steps. The figures are modelled monthly averages, so single days can be well above them. The daily peak is the average of each day's highest hour, shaded on the same scale.