Photo: Chris Flook · CC BY-SA 4.0In Oldenburg, July heat, January chill and rainfall all sit near the middle of U.S. towns
January nights here settle around 21°. Warming shows here too: 0.8° more than in 1901–2000, led by December. Plan time outside from April to June and August to October, when highs sit at 65–84°.
A year in Oldenburg at a glance
Each month’s typical high and low, and what it brings.
What stands out about Oldenburg’s climate
Compared with towns across the U.S., with Oldenburg’s place in Indiana beside it.
What a year in Oldenburg feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 182 frost-free days a year
In half of years the last 32° night comes by April 20 and the first by October 21. Frost and day counts come from NOAA’s station at Brookville, IN, 12 miles from the town’s center, 310 ft lower.
The 2023 USDA map puts Oldenburg’s center in zone 6b: the coldest night of a typical winter, averaged over 1991–2020, reaches about −5°. 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 13 inches of snow a winter
Snow, measured at Greensburg, IN, falls mostly in January. Precipitation (rain plus melted snow) adds up to 45 inches a year; May is the wettest month and February the driest. Rain or snow falls on about 122 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Oldenburg
83% of the work is heating. 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 Brookville, IN.
Living with Oldenburg’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
182 frost-free days in zone 6b. The last frost comes by Apr 20 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 21.
Months with highs of 62–84° and lows of 40° or more: April, May, June, August, September and October. 0.0 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Oldenburg from natural hazards, river flooding is the largest share (57%); heat waves, cold waves, winter storms and ice storms together are 9%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Oldenburg and similar climates
TownRatings has no climate map of the towns around Oldenburg yet.
Climates most like Oldenburg’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 |
|---|---|---|---|---|
| Oldenburg, IN | 21° | 85° | 45" | 13" |
| Morgantown, WV | 22° | 84° | 45" | 14" |
| Marietta, OH | 23° | 86° | 44" | 16" |
| Plainview, NY | 24° | 85° | 45" | 19" |
| Mattoon, IL | 20° | 86° | 41" | 15" |
Temperatures and precipitation come from NOAA’s 5 km grid; snow and day counts from the stations named on this page.
Warmer than it used to be
The last 30 years in Oldenburg averaged 0.8° warmer than the 1900s. The biggest change is in December (+1.9°).
A smaller shift than in 88% 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 Oldenburg compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Oldenburg’s place among Indiana’s.
Oldenburg weather by month
Highs, lows and precipitation from NOAA’s grid at Oldenburg’s center; snow, wet days and snow on the ground from Greensburg, IN. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 37° | 21° | 3.3" | 4.4" | 11 | 8 | 20° – 40° |
| February | 41° | 24° | 2.6" | 3.8" | 9 | 6 | 20° – 42° |
| March | 52° | 32° | 3.7" | 1.7" | 11 | 2 | 35° – 55° |
| April | 65° | 41° | 4.5" | 0.0" | 13 | 0 | 47° – 59° |
| May | 74° | 52° | 5.0" | 0.0" | 13 | 0 | 57° – 70° |
| June | 82° | 60° | 4.8" | 0.0" | 11 | 0 | 66° – 74° |
| July | 85° | 64° | 4.3" | 0.0" | 10 | 0 | 69° – 80° |
| August | 84° | 62° | 3.4" | 0.0" | 8 | 0 | 68° – 78° |
| September | 78° | 55° | 3.1" | 0.0" | 8 | 0 | 63° – 72° |
| October | 66° | 43° | 3.4" | 0.1" | 8 | 0 | 51° – 61° |
| November | 53° | 33° | 3.3" | 0.2" | 9 | 0 | 36° – 49° |
| December | 41° | 26° | 3.4" | 3.1" | 11 | 5 | 21° – 44° |
| Year | 63° | 43° | 44.8" | 13.3" | 122 | 21 |
How much a month can swing
A normal is an average. December swings the most: from 1991 to 2020 its average ranged from 21° to 44°. June is the most reliable, staying within 8°.
Where Oldenburg’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 Oldenburg’s center.
- Snow: Greensburg, IN.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Brookville, IN, 12 miles from the town’s center, 310 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 Oldenburg’s climate
What is the weather like in Oldenburg?
A typical July afternoon reaches 85°, a January night drops to 21°, and about 13 inches of snow falls in a normal winter. Colder January nights than 53% of U.S. towns; cooler July afternoons than 52% of U.S. towns.
How cold does it get in Oldenburg in winter?
January nights average 21°. About 119 nights a year reach 32° or below and 4 reach 0° or below. In the coldest January of the last 30 years the month averaged 20°.
How much snow does Oldenburg get?
About 13 inches in a normal winter at Greensburg, IN, most of it in January, with snow on the ground about 21 days a year.
How hot does it get in Oldenburg?
July, with a typical high of 85° and a low of 64°. About 32 days a year reach 90° (Brookville, IN).
When is the first and last frost in Oldenburg?
In half of years the last spring frost (32°) comes by April 20 and the first fall frost by October 21, about 182 frost-free days, at Brookville, IN.
What growing zone is Oldenburg in?
Zone 6b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −5°.
What is the best time of year to visit Oldenburg?
By one simple rule (highs of 62–84° and lows of 40° or more), April, May, June, August, September and October. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Oldenburg getting warmer?
Yes: 1991–2020 averaged 0.8° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 88% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Oldenburg.
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.