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Best time to visit · Pennsylvania, United States
April & May and September & October are the best time to visit Lancaster on the climate data: October scores 82/100, with highs around 65°F (18°C) and 4.4 in (112 mm) of rain. June – August and November are good shoulder-season months. The toughest months are December – February, mainly because of cool days.
Highs run from 37°F to 86°F across the year, and the yearly total is about 47.0 in (1194 mm) of rain and snow.
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high | 37°F3°C | 39°F4°C | 49°F9°C | 62°F17°C | 72°F22°C | 81°F27°C | 86°F30°C | 85°F30°C | 79°F26°C | 65°F18°C | 53°F11°C | 41°F5°C |
| Avg low | 22°F-6°C | 23°F-5°C | 30°F-1°C | 41°F5°C | 52°F11°C | 62°F16°C | 67°F19°C | 65°F19°C | 58°F14°C | 46°F8°C | 35°F2°C | 27°F-3°C |
| Rain/snow | 2.8 in72 mm | 2.8 in72 mm | 3.4 in87 mm | 3.7 in95 mm | 3.9 in100 mm | 4.8 in122 mm | 4.8 in122 mm | 4.4 in113 mm | 4.6 in117 mm | 4.4 in112 mm | 3.3 in83 mm | 3.9 in99 mm |
| Humidity | 85% | 84% | 81% | 78% | 78% | 76% | 71% | 71% | 72% | 78% | 81% | 86% |
| Cloud | 69% | 67% | 65% | 63% | 65% | 59% | 55% | 56% | 54% | 59% | 62% | 71% |
| Comfort | 43 | 44 | 57 | 79 | 81 | 75 | 68 | 72 | 81 | 82 | 64 | 41 |
Source: NASA POWER (public domain), 2001–2025 monthly averages on a ~50 km satellite and reanalysis grid, so coasts and valleys can differ from what's shown. The grid cell sits at about 150 m (492 ft), close to Lancaster's own ~111 m. Precipitation includes snow as melted water; daylight is calculated from latitude. Check a forecast before you go.
The coldest season, with highs of 37–41°F (3–5°C) and lows down to 22°F (-6°C). It's the driest season, with only about 9.6 in (243 mm) of rain or snow, 20% of the year's total. December – February are cold enough for snow. It holds the toughest stretch on our comfort score (December – February), averaging 43/100.
Temperatures climb through the season, from 49°F highs in March to 72°F by May. About 11.1 in (282 mm) of rain falls across these months, 24% of the year's total. Nights dip below freezing in March. April & May are among the best-scoring months (season average 72/100).
The warmest stretch of the year, with highs of 81–86°F (27–30°C). It's the wettest season, with about 14.1 in (357 mm) of rain, 30% of the year's total. June feels humid, with humidity near 76%. June – August score well without being the very best (season average 72/100).
Temperatures slide from 79°F highs in September to 53°F by November. About 12.3 in (312 mm) of rain falls across these months, 26% of the year's total. Lows bottom out around 35°F (2°C). September & October are among the best-scoring months (season average 76/100).
By comfort score: 5 Great, 3 Good, 1 Fair and 3 Tough. Great months: April – June and September & October. Tap a month for its own guide.
April & May and September & October are the best time to visit Lancaster on the climate data: October scores 82/100, with highs around 65°F (18°C) and 4.4 in (112 mm) of rain. June – August and November are good shoulder-season months. The toughest months are December – February, mainly because of cool days.
June is the wettest month, averaging about 4.8 in (122 mm) of rain. January is the driest, with about 2.8 in (72 mm). The yearly total is around 47.0 in (1194 mm).
January is the coldest, with average lows of 22°F (-6°C) and highs of 37°F (3°C). The warmest is July, with average highs of 86°F (30°C).
Yes: in June humidity averages 76% with warm temperatures, so it feels muggy. Summer highs peak around 86°F (30°C).
On average, yes: lows fall below 32°F (0°C) in December – March, bottoming out around 22°F (-6°C) in January.
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