weatherbycounty

Bremer County Climate

JanFebMarAprMayJunJulAugSepOctNovDec46.4°AVG °F

Avg Annual Temp

46.4°F

Annual Precip

38.6"

Annual Snowfall

Extreme Heat Days

11

days >= 90°F/yr

Monthly Temperature

54.4°F avgJFMAMJJASOND

Precipitation Calendar

Dry
Wet
1.2"
1.1"
2.0"
3.9"
5.1"
6.0"
4.8"
4.3"
3.8"
3.0"
2.0"
1.5"
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Growing Season & Gardening

USDA Hardiness Zone

5a

Minimum winter temperature range for plant survival

Growing Degree Days

2,778

Supports most vegetables & fruits

Last spring frost (32°F): 04/29
First fall frost (32°F): 10/09

Seasonal Overview

Comfort ZoneSpring33°59°11.0"Summer69°72°15.1"Fall35°62°8.7"Winter16°23°3.8"20°40°60°80°100°

National Comparison

Warmer than 17% of US counties
Wetter than 42% of US counties
More seasonal variation than 94% of US counties

7-Day Outlook

Forecast

Current Conditions

Air Quality

Safety

Weather Alerts

Climate Advisory: Bremer County

Climate Verdict

Bremer County has a cool, averaging 46.4°F annually, moderate rainfall of 38.6 inches per year, rare extreme heat with only 11 days above 90°F annually. This climate profile shapes everything from energy costs to outdoor recreation opportunities.

Seasonal Breakdown

Winters are very cold — January averages 16.1°F. summers are warm — July averages 72.2°F. Residents experience a substantial 56°F difference between winter and summer.

Outdoor & Gardening Guidance

Growing season and gardening data is currently limited for Bremer County. Check the USDA Plant Hardiness Zone Map and local extension office for specific guidance.

Regional Context

Bremer County closely matches the Iowa statewide average temperature of 48.0°F, it is somewhat wetter than average for Iowa.

Climate Profile

About Bremer County Weather

Cooler Northern Climate Patterns

Bremer County maintains an annual average temperature of 46.4°F, which is notably lower than the national median of approximately 53°F. This reflects a typical humid continental climate where four distinct seasons define the local lifestyle.

Below the Iowa State Average

The county's average temperature sits 1.6 degrees below the Iowa state average of 48.0°F. This positioning marks it as one of the cooler regions within the state's northern tier.

Consistency Across the Northern Border

Bremer's 46.4°F average closely tracks with neighboring Butler County's 46.7°F. It is slightly wetter than the state average, receiving 38.6 inches of precipitation annually compared to Iowa's 36.1-inch benchmark.

Mild Summers and Sharp Winters

Summer temperatures average a pleasant 70.4°F with only 11 days reaching above the 90°F mark. Winters are much more intense, featuring a January average of just 16.1°F.

Preparing for Significant Moisture

With precipitation levels exceeding the state average by 2.5 inches, residents should prioritize basement waterproofing and gutter maintenance. While local snowfall records are limited, the 19.7°F winter average necessitates high-efficiency heating systems.

Frequently Asked Questions

What is the average temperature in Bremer County?
The average annual temperature in Bremer County, IA is 46.4°F, based on NOAA 30-year climate normals (1991-2020).
How much rain does Bremer County get?
Bremer County receives an average of 38.6 inches of precipitation per year, including both rain and meltwater from snow. This is based on NOAA 30-year climate normals.
How hot does Bremer County get in summer?
The average summer temperature (June-August) in Bremer County is 70.4°F. The county experiences an average of 11 days per year above 90°F.
How cold are winters in Bremer County?
The average winter temperature (December-February) in Bremer County is 19.7°F. January, typically the coldest month, averages 16.1°F.

Track your own weather in Bremer County

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Data sources: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991-2020. Forecast and alert data from National Weather Service API. Air quality data from Open-Meteo.

Climate normals are 30-year averages of weather variables. Station data is aggregated to county level. Forecasts and alerts are fetched live and may change frequently. Data is informational only — not a substitute for official National Weather Service forecasts or emergency weather warnings.

By Evan Brooks, Data EditorUpdated Reviewed by Evan Brooks, Data Editor
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