Best Time-of-Year
The best month at Northumberland is April, when temperatures average 5–12 °C (40–53 °F) and mid-day humidity sits around 68%. Expect cool days, with around 3 excellent days in a typical April. March, April, and May are the most reliable months.
- Terrible
- Poor
- Fair
- Good
- Excellent
- Perfect
Tap a month for its details below.
Month by Month
January
A typical January brings cool days, with around 6 climbable days. Cold takes out most of the rest.
February
A typical February brings cool days, with around 9 climbable days. Cold takes out most of the rest.
March
March is among the year's most reliable months — expect rainy, cool days, with around 14 climbable days.
April
April is the year's best month for climbing — expect cool days, with around 3 excellent days.
May
May is among the year's most reliable months — expect mild days, with around 19 climbable days.
June
A typical June brings mild days, with around 20 climbable days. Heat takes out most of the rest.
July
A typical July brings rainy, mild days, with around 13 climbable days. Heat takes out most of the rest.
August
A typical August brings rainy, mild days, with around 19 climbable days. Heat takes out most of the rest.
September
A typical September brings rainy, mild days, with around 13 climbable days. Heat takes out most of the rest.
October
A typical October brings rainy, cool days, with around 11 climbable days.
November
A typical November brings rainy, cool days, with around 5 climbable days. Humid air takes out most of the rest.
December
A typical December brings rainy, cool days, with few climbable days. Humid air takes out most of the rest.
A Typical Year
| Month | Excellent Days | Viable Days | Off Days | Temperature | Wet Days | Mid-Day Humidity |
|---|---|---|---|---|---|---|
| January | 0 | 6 | 25 | 2–6 °C 35–43 °F | 11 | 81% |
| February | 0 | 9 | 19 | 3–8 °C 38–47 °F | 11 | 76% |
| March | 1 | 14 | 16 | 3–10 °C 38–50 °F | 12 | 70% |
| April | 3 | 16 | 11 | 5–12 °C 40–53 °F | 11 | 68% |
| May | 1 | 19 | 11 | 8–15 °C 46–60 °F | 10 | 68% |
| June | 0 | 20 | 10 | 10–18 °C 51–65 °F | 11 | 65% |
| July | 0 | 13 | 18 | 12–19 °C 54–67 °F | 13 | 68% |
| August | 0 | 19 | 12 | 12–19 °C 53–67 °F | 12 | 66% |
| September | 0 | 13 | 17 | 10–17 °C 50–63 °F | 12 | 71% |
| October | 0 | 11 | 20 | 8–14 °C 46–57 °F | 15 | 75% |
| November | 0 | 5 | 25 | 5–10 °C 40–50 °F | 13 | 80% |
| December | 0 | 1 | 30 | 3–7 °C 38–45 °F | 15 | 85% |