Climate for Station: Hanover, New Hampshire, United States

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Hanover

New Hampshire, United States of America

2026-02-28 21:28

4.4°C

Feels 3.5°C

H: 12.2°C / L: -5.8°C

Precip: 0mm | Wind: 4.7 kph

▲ 10.4°C vs historical high

Clear

2026-03-01

H: -1.4°C

L: -15.6°C

Rain: 0%

Rainfall: 0mm

Wind: 19.4kph

▼ 4.1°C

2026-03-02

H: -4.2°C

L: -14.7°C

Rain: 0%

Rainfall: 0mm

Wind: 12.2kph

▼ 6.9°C

2026-03-03

H: -0.8°C

L: -9.7°C

Rain: 76%

Rainfall: 1.33mm

Wind: 12.6kph

▼ 3.1°C

2026-03-04

H: 5.5°C

L: -8.7°C

Rain: 81%

Rainfall: 4.87mm

Wind: 5.8kph

▲ 3.1°C

2026-03-05

H: 6.4°C

L: -0.1°C

Rain: 81%

Rainfall: 7.38mm

Wind: 11.5kph

▲ 3.5°C

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Climate Analysis & Overview

Hanover, situated in New Hampshire, exhibits a nuanced climate profile characterized by a mild warming trend over the long term, juxtaposed with a recent cooling in the last decade. Precipitation patterns show a slight shift towards more even distribution, indicating gradual climatic adjustments in this region.

Geographical Climate Context

Hanover is nestled in the northeastern United States, falling under the Köppen climate classification of Dfb, which denotes a humid continental climate with warm summers and cold, snowy winters. The presence of the Appalachian Mountains to the west plays a significant role in moderating temperatures and influencing precipitation patterns. The Connecticut River, flowing nearby, can also contribute to local microclimates, particularly affecting humidity levels.

Temperature Trends: A Tale of Two Timelines

Over the all-time recorded period, Hanover has experienced a slight warming trend, with average high temperatures increasing by 0.15°C (0.27°F) and lows by 0.23°C (0.42°F). This indicates a gradual rise in baseline temperatures, consistent with broader regional trends across the northeastern United States. However, the past decade tells a different story, with a cooling trend observed: high temperatures have decreased by 0.29°C (0.52°F) and lows by 0.17°C (0.30°F). This recent cooling phase could be attributed to natural climate variability or specific local factors, such as changes in land use or vegetation cover.

Precipitation Patterns: Towards Even Distribution

The Precipitation Concentration Index (PCI) provides insight into the distribution of rainfall events. Hanover's PCI has marginally decreased from a baseline of 11.26 to 10.75, suggesting a trend towards more evenly distributed precipitation throughout the year. This subtle shift indicates fewer intense rainfall events and a more consistent pattern of precipitation, which can be beneficial for agriculture and water management in the region.

Temperature Extremes: Record Highs and Lows

Hanover's climate is marked by significant temperature extremes, with a record high of 39.4°C (102.9°F) and a record low of -40.0°C (-40.0°F). These extremes highlight the region's susceptibility to both heatwaves and severe cold spells, which can have profound impacts on local ecosystems and human activities. The ability to manage these extremes is crucial for resilience against potential climate-related disruptions.

Regional Climate Objectives

In the context of the United States' climate goals, which emphasize reducing greenhouse gas emissions and enhancing climate resilience, Hanover's climate profile offers both challenges and opportunities. The observed trends, particularly the recent cooling, underscore the importance of continuous monitoring and adaptive management strategies to align local actions with broader national objectives. The slight shift towards more even precipitation distribution may aid in achieving sustainable water resource management, a key component of regional climate adaptation efforts.

Station Statistics

10-Year Trend

High: -0.29 °C/decade

Low: -0.17 °C/decade

Rain: +0.57 mm/decade

25-Year Trend

High: +0.87 °C/decade

Low: +0.76 °C/decade

Rain: -0.01 mm/decade

50-Year Trend

High: +0.28 °C/decade

Low: +0.66 °C/decade

Rain: +0.03 mm/decade

All-Time Trend

High: +0.15 °C/decade

Low: +0.23 °C/decade

Rain: +0.03 mm/decade

Percentage Above-Average Days

Last 12 Months: 52.6%

This Year: 57.4%

Precipitation Concentration Index (PCI) ℹ️

Last 12 Months: 10.8

Historical Average: 11.3

Percentile Rank of Last 12 Months ℹ️

High: 78^th percentile

Low: 84^th percentile

Rain: 57^th percentile

Change in Variance ℹ️

High: -4.9%

Low: -14.4%

Intraday: -18.5%

Data Coverage

79.4%

First Year of Data

1884

Station Location

Historical Weather Records

	Max High	Avg High	Min High	Max Avg	Avg Avg	Min Avg	Max Low	Avg Low	Min Low	Max Precipitation	Avg Precipitation	Max Snow	Avg Snow
Record	39.4 °C	—	-24.4 °C	28.8 °C	—	-28.3 °C	25.0 °C	—	-40.0 °C	143.5 mm	—	622.0 mm	—
January	17.8 °C	-1.8 °C	-21.7 °C	11.7 °C	-7.4 °C	-28.3 °C	10.6 °C	-12.7 °C	-36.7 °C	57.4 mm	2.3 mm	381.0 mm	16.6 mm
February	18.9 °C	-0.1 °C	-20.6 °C	9.6 °C	-6.0 °C	-25.1 °C	9.4 °C	-12.1 °C	-40.0 °C	53.8 mm	2.3 mm	622.0 mm	17.1 mm
March	30.0 °C	5.5 °C	-14.4 °C	17.5 °C	-0.9 °C	-20.0 °C	10.6 °C	-6.1 °C	-35.0 °C	104.1 mm	2.5 mm	432.0 mm	11.4 mm
April	33.9 °C	13.1 °C	-3.9 °C	22.6 °C	6.2 °C	-12.4 °C	16.7 °C	0.2 °C	-17.8 °C	60.7 mm	2.7 mm	445.0 mm	3.7 mm
May	35.6 °C	20.4 °C	3.9 °C	25.9 °C	12.9 °C	-0.0 °C	24.4 °C	6.3 °C	-6.7 °C	74.5 mm	2.9 mm	224.0 mm	0.3 mm
June	37.0 °C	25.0 °C	10.0 °C	28.6 °C	17.6 °C	7.9 °C	22.2 °C	11.4 °C	-10.6 °C	73.7 mm	3.1 mm	0.0 mm	0.0 mm
July	38.3 °C	27.6 °C	13.9 °C	28.8 °C	20.2 °C	9.7 °C	25.0 °C	14.3 °C	2.8 °C	143.5 mm	3.4 mm	13.0 mm	0.0 mm
August	39.4 °C	26.3 °C	12.8 °C	28.4 °C	19.1 °C	8.6 °C	23.9 °C	13.3 °C	0.6 °C	111.2 mm	3.0 mm	94.0 mm	0.9 mm
September	36.1 °C	21.9 °C	5.0 °C	25.5 °C	15.0 °C	2.6 °C	22.2 °C	9.2 °C	-5.6 °C	84.5 mm	3.0 mm	0.0 mm	0.0 mm
October	30.6 °C	15.2 °C	0.0 °C	21.5 °C	8.4 °C	-2.7 °C	21.7 °C	3.2 °C	-11.7 °C	104.2 mm	2.7 mm	152.0 mm	0.3 mm
November	26.1 °C	7.3 °C	-10.6 °C	21.0 °C	2.2 °C	-14.2 °C	17.2 °C	-2.2 °C	-24.4 °C	96.8 mm	2.8 mm	406.0 mm	4.7 mm
December	24.4 °C	0.2 °C	-24.4 °C	13.7 °C	-3.8 °C	-23.3 °C	10.6 °C	-9.2 °C	-38.3 °C	61.0 mm	2.5 mm	495.0 mm	13.7 mm