Photo: User:Dincher · CC BY-SA 3.0A middle-of-the-road climate: Lewis Township is close to most U.S. towns on every count
Expect July afternoons of about 85°. The wettest month is September; the driest is February. Homes need heating from November to April, the months averaging under 50°.
A year in Lewis Township at a glance
Each month’s typical high and low, and what it brings.
What stands out about Lewis Township’s climate
Compared with towns across the U.S., with Lewis Township’s place in Pennsylvania beside it.
What a year in Lewis Township feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 153 frost-free days a year
In half of years the last 32° night comes by May 5 and the first by October 6. Frost and day counts come from NOAA’s station at Millheim, PA, 19 miles from the town’s center, 180 ft lower.
The 2023 USDA map puts Lewis Township’s center in zone 6b: the coldest night of a typical winter, averaged over 1991–2020, reaches about −3°. Plant labels use the zone; frost dates tell you when to plant.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
About 29 inches of snow a winter
Snow, measured at Lewisburg, PA, is heaviest from January through February, about 8 inches a month. Precipitation (rain plus melted snow) adds up to 43 inches a year; September is the wettest month and February the driest. Rain or snow falls on about 137 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Lewis Township
93% of the work is heating, so the furnace matters far more than the air conditioner. Months averaging under 55° run from October through April.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Millheim, PA.
Living with Lewis Township’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
153 frost-free days in zone 6b. The last frost comes by May 5 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Oct 6.
Months with highs of 62–84° and lows of 40° or more: May, June, August, September and October. 42 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Lewis Township from natural hazards, river flooding is the largest share (71%); heat waves, cold waves, winter storms and ice storms together are 5%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Lewis Township and its neighbors
Greene Township has the coldest January nights next door (16°, 4° colder). Differences under a degree are within what the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like Lewis Township’s, farther away
TownRatings’ own comparison of NOAA 1991–2020 normals, not a NOAA product: places of 5,000+ at least 150 miles away, one per state, closest on January low, July high, precipitation and snow.
| Town | Jan. low | July high | Precip. | Snow |
|---|---|---|---|---|
| Lewis Township, PA | 20° | 85° | 43" | 29" |
| Reynoldsburg, OH | 21° | 84° | 43" | 28" |
| McCordsville, IN | 20° | 85° | 44" | 27" |
| Hudson, NY | 17° | 85° | 43" | 31" |
| Manteno, IL | 17° | 84° | 40" | 29" |
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value. Snow and frost-free days come from the nearest weather station, so neighbors often share them.
Warmer than it used to be
The last 30 years in Lewis Township averaged 1.2° warmer than the 1900s. The biggest change is in December (+2.7°).
A smaller shift than in 66% of U.S. towns.
Change by month
The two periods overlap (1991–2000 is in both), which makes the gap a little smaller than it would be between separate periods.
How Lewis Township compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Lewis Township’s place among Pennsylvania’s.
Lewis Township weather by month
Highs, lows and precipitation from NOAA’s grid at Lewis Township’s center; snow, wet days and snow on the ground from Lewisburg, PA. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 35° | 20° | 2.9" | 8.0" | 11 | 13 | 18° – 36° |
| February | 39° | 21° | 2.4" | 7.8" | 9 | 12 | 17° – 37° |
| March | 48° | 28° | 3.4" | 5.3" | 11 | 4 | 32° – 48° |
| April | 62° | 38° | 3.6" | 0.8" | 13 | 0 | 45° – 55° |
| May | 72° | 48° | 3.9" | 0.0" | 14 | 0 | 55° – 66° |
| June | 80° | 57° | 4.0" | 0.0" | 13 | 0 | 65° – 71° |
| July | 85° | 62° | 4.1" | 0.0" | 11 | 0 | 69° – 77° |
| August | 82° | 60° | 3.8" | 0.0" | 12 | 0 | 67° – 75° |
| September | 75° | 53° | 4.4" | 0.0" | 11 | 0 | 61° – 68° |
| October | 63° | 41° | 3.8" | 0.2" | 11 | 0 | 48° – 59° |
| November | 51° | 32° | 3.1" | 1.3" | 10 | 1 | 36° – 46° |
| December | 40° | 25° | 3.2" | 5.4" | 11 | 6 | 24° – 42° |
| Year | 61° | 40° | 42.5" | 28.8" | 137 | 37 |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 17° to 37°. June is the most reliable, staying within 6°.
Where Lewis Township’s numbers come from
Normals are 30-year averages, not a forecast. How TownRatings reads climate data →
- Temperatures and precipitation: NOAA’s gridded 1991–2020 normals for the 5 km cell at Lewis Township’s center.
- Snow: Lewisburg, PA.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Millheim, PA, 19 miles from the town’s center, 180 ft lower; the nearest station that passes our checks for distance, height and agreement with the grid.
- Growing zone: USDA Plant Hardiness Zone Map, 2023. USDA Agricultural Research Service and PRISM Group, Oregon State University, prism.oregonstate.edu/phzm, accessed 8 Oct 2026.
- Then and now: NOAA’s gridded normals for 1901–2000 at the same cell.
- Storms and extremes: FEMA National Risk Index (expected annual losses to buildings).
Common questions about Lewis Township’s climate
What is the weather like in Lewis Township?
A typical July afternoon reaches 85°, a January night drops to 20°, and about 29 inches of snow falls in a normal winter. Colder January nights than 60% of U.S. towns; cooler July afternoons than 54% of U.S. towns.
How cold does it get in Lewis Township in winter?
January nights average 20°. About 152 nights a year reach 32° or below and 6 reach 0° or below. In the coldest January of the last 30 years the month averaged 18°.
How much snow does Lewis Township get?
About 29 inches in a normal winter at Lewisburg, PA, heaviest from January through February, about 8 inches a month, with snow on the ground about 37 days a year.
How hot does it get in Lewis Township?
July, with a typical high of 85° and a low of 62°. About 11 days a year reach 90° (Millheim, PA).
When is the first and last frost in Lewis Township?
In half of years the last spring frost (32°) comes by May 5 and the first fall frost by October 6, about 153 frost-free days, at Millheim, PA.
What growing zone is Lewis Township in?
Zone 6b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −3°.
What is the best time of year to visit Lewis Township?
By one simple rule (highs of 62–84° and lows of 40° or more), May, June, August, September and October. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Lewis Township getting warmer?
Yes: 1991–2020 averaged 1.2° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 66% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Lewis Township.
Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000; USDA/PRISM 2023 hardiness zones; FEMA National Risk Index. Today’s forecast: National Weather Service.