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Calamus Reservoir — Current Water Temperature, Annual Trends and Forecast

This page provides information on the current water temperature in Calamus Reservoir, trends, monthly ranges and the forecast for the coming days.

Kirwin Reservoir, United States
Kirwin Reservoir, United States © By USFWS Mountain-Prairie, CC BY 2.0

Current Water Temperature

26.5°C
Today
26.0°C
Yesterday
26.1°C
A Week Ago
Get instant access to real-time water temperatures for this and all other locations with our iOS and Android apps.

Water Temperature in Calamus Reservoir today is 26.5°C.

Water Temperature: Daily Trends, Historical Records, and Forecast

✅ As of today, the minimum water temperature ranges from 79°F (26°C) to 82°F (28°C). This is very warm water, allowing for extended stays without any discomfort. Swimming in these conditions will be particularly enjoyable, making it the ideal temperature range for those who want to relax in the sea. Additionally, water in this temperature range is suitable for children and elderly people, as it is comfortable for prolonged stays. It is important to note that these swimming tips and recommendations apply only in good weather. When the air temperature is below 68°F (20°C), and sometimes even below 77°F (25°C), swimming can be unpleasant even with relatively high water temperatures.

Water Temperature Chart Over the Last 30 Days

From July 11 to August 11

Table of Daily Sea Temperature Data

Date Current Average Forecast
AUG 426.1°C26.0°C
AUG 526.1°C26.0°C
AUG 625.7°C26.0°C
AUG 725.8°C26.0°C
AUG 825.8°C26.0°C
AUG 926.0°C26.0°C
AUG 1026.0°C26.0°C
AUG 1126.1°C26.0°C
AUG 1226.0°C26.5°C
AUG 1326.0°C26.5°C
AUG 1426.0°C26.4°C
AUG 1526.0°C26.4°C
AUG 1626.0°C26.4°C
AUG 1726.0°C26.4°C
AUG 1826.0°C26.3°C

* Current - Actual water temperature value

** Average - Average water temperature on this day in recent years

*** Forecast - Our water temperature forecast

Actual nearshore water temperatures may fluctuate by several degrees from the reported values, especially following heavy rainfall or extended periods of strong winds. Certain wind patterns can cause colder, deeper waters to rise and replace the sun-warmed surface water, leading to noticeable variations.

Our forecast is based on a proprietary mathematical model that considers real-time water temperature changes, historical trends, key weather patterns, wind strength and direction, and air temperature specific to each region. Additionally, we incorporate data from other resorts to enhance accuracy.

Monthly Water Temperature Range (Min, Max & Average)

Month Min Avg Max
January0°C4°C6°C
February0°C5°C9°C
March1°C8°C15°C
April8°C14°C19°C
May11°C17°C23°C
June17°C22°C26°C
July22°C26°C30°C
August23°C26°C29°C
September20°C23°C26°C
October11°C16°C21°C
November3°C10°C16°C
December0°C2°C5°C

Calamus Reservoir: Water Temperature by Location

Calamus Reservoir: Weather Forecast

August 12

° / °
overcast
rain: 11% | wind:

August 13

° / °
moderate rain showers
rain: 80% | wind:

August 14

° / °
slight rain showers
rain: 50% | wind:

August 15

° / °
light drizzle
rain: 36% | wind:

August 16

° / °
slight rain
rain: 31% | wind:

Location & Local Information

Calamus Reservoir’s water temperatures follow typical inland reservoir patterns, with cold winters and warm summers. In winter the surface often approaches freezing, roughly 32–40°F (0–4°C), while spring brings a steady rise into the range of about 40–60°F (4–16°C) as ice melts and air temperatures warm. Peak summer surface readings commonly sit between about 68–82°F (20–28°C), occasionally edging a few degrees higher during heat waves. In autumn the lake cools again, with surface temperatures generally falling into the 50–65°F (10–18°C) window as the season progresses. Deeper waters remain cooler year-round, and actual temperatures can vary with weather, inflow, and daytime heating.

Swimming at Calamus Reservoir is generally permitted in the recreation areas and at marked beaches, but conditions and rules can change, so visitors should observe posted signs. There are typically no lifeguards on duty, so swimming is at one’s own risk; flotation devices and swimming with companions are advisable. Seasonal factors such as low water, sudden temperature drops in spring and fall, and occasional algal or bacterial advisories can affect safety, so checking local notices before entering the water is recommended.

Nearby Lakes

Frequently Asked Questions

What is the current water temperature in Calamus Reservoir?
Water Temperature in Calamus Reservoir today is 26.5°C.
What is the water temperature in Calamus Reservoir during the summer months?
The water temperature in Calamus Reservoir in summer fluctuates in the range of 17°C - 30°C.
Is it possible to swim in Calamus Reservoir and what are the possibilities for this?
Yes, swimming is allowed in Calamus Reservoir, Nebraska. Additionally, the reservoir offers camping, picnicking, fishing, and boating facilities for visitors to enjoy.