Navigation

External Links

Air Quality Alert - Merrimack (New Hampshire) In Effect ... [Click here for more]

Regional Radar Regional Visible Satellite
Radar/Satellite images courtesy of Weather Underground.
spacer
METRIC | IMPERIAL
Updated: 26-Jul-2021 @ 10:40pm  
Temperature Current Conditions Forecast / Storm Prediction
Currently Outside: Colder 0.7°F than last hour.

68.7°F

Feels like:  64°F
---
High Today
84.6°F
3:10 PM		 Low Today
61.7°F
6:22 AM
Normal High
82.9°F
 Normal Low
60.1°F
Rec* High
100.0°F
1870		 Rec* Low
42.1°F
2015
* *
<!-- fixupCondition in='Night time/Dry/A few clouds ' out='Night time, Dry, A few clouds' ocnt='3' --><!-- vals split on slash --> Night time, Dry, A few clouds Night time, Dry, A few clouds

Calm Wind:  NNE
0.0
Gusting to:
 0.0 mph
Current Rain Rain:
0.00 in
Fire Weather Index: MINIMAL Current FWI:4
Fire Danger:
0.0 of 232
Tonight

Mostly Clear
Mostly Clear
Lo ≈63°F		 Tuesday

Thunder storm
Thunder storm
Hi ≈85°F		 Tuesday
Night
Thunder storm
Thunder storm
Lo ≈59°F
SPC Activity Map
Dew Point Liquid Precipitation Wind Speed Sun/Moon
Current: Increased 0.3°F since last hour. 66.6°F
Last Hour: Increased 0.3°F since last hour.0.3°F
High 10:16 AM: 74.0°F
Low 6:09 AM: 60.9°F
Record High: 82.8°F on
3-Jul-2018
Record Low: -79.1°F on
6--2014
Wetbulb: 67.4°F
Today: 0.00 in
Yesterday: 0.32 in
Last 7 Days: 1.02 in
Jul Rain: 10.01 in
Jul to Date
  Avg:10 		0.00 in
Jul to Date
  Diff from Avg:10 		Over 10.01 in for the month 10.01 in
Jul Avg: 3.16 in
Diff from Avg: Over 6.85 in for the month 6.85 in
Season:1 21.26 in
YTD
  Avg:11 		0.00 in
YTD
  Diff from Avg:11 		Over 21.26 in for the year 21.26 in
Last Rain
Time/Date: 		25-Jul-2021
at 11:25 AM
66 rain days in 2021
18 days in July
0 days since last rain
Current: NNE  0.0 mph
1Hr Average: 0.9 mph
Wind Run: 30.67 miles
Wind Gust
Current: 0.0 mph mph
Today: 13.0 mph2:37 PM
Month: 26.0 mph 20-Jul
Year: 50.0 mph 29-Mar
Record Gust: 101.2 mph
30-Nov-2008
Sunrise:  5:31 am
Sunset:  8:13 pm
Sunlight:
14 hrs 42 min
of Sunlight Today
 graph 61.3% 38.7%
Which is
2 min 01 sec Shorter
Than Yesterday
 
Morning Crescent, 17 days, 1 hours, 34 minutes in cycle
7%
Illuminated
Humidity Barometer
Current: Increased 3% since last hour.93%
Last Hour: Increased 3% since last hour.3%
High 7:41 AM: 99%
Low 4:54 PM: 58%
Record High: 100%
24-May-2005
Record Low: 0%
10-Feb-2007
Current: Rising 0.015 inHg/hr 29.848 inHg
Last Hour: Rising slowly
High 10:02 PM: 29.854 in.
Low 7:04 PM: 29.797 in.
Record High: 30.877 inHg
21-Mar-2007
Record Low: 28.092 inHg
23-Jul-2011
Cooling Degree Days Snow3 Heat Index Air
Data Not
Available
Today: 3.6
Jul: 112.0
2021 to Date: 266.5
Heating Degree Days
2021 to Date: 3901.1
Today: 0.00 in
Yesterday: 0.00 in
Jul Snow: No Change 0.00 in
Jul Avg: 0.00 in
Diff from Avg: 0.00 in
Season Total:2 0.00 in
Snow Depth: 0.00 in
0 snow days in July
0 snow days this season.2
First Snow of Season:
--
Average 1st Snow:
Current: 64.2°F
High 3:10pm: 90.4°F
Yesterday: 76.5°F
Record: 124.3°F
3-Jul-2018
Data Not
Available

Data Not Available
Density:
1.19 kg/m3
UV Summary/Forecast Solar Summary
High Today:   5.1 @ 9:56 AM
Jul-27

 Jul-28

 Jul-29
High Today:  
606 W/m2 @ 9:53 AM
Sun Hours Today:
00:00
   This Month: 58:19 Hrs
Rise: 5:31 am  Set: 8:13 pm
Almanac Irrigation Index5 Station All Time Records Cloud Level
Current: Evening
YTD Avg Temp: 46.0°F
Sunrise: 5:31 am
Sunset: 8:13 pm
Moonrise: 10:19 pm
Moonset: 9:15 am
Full Moon: July--2021
New Moon: 13:51 UTC
August--2021
Updated at Midnight
Current ET: 0.06 in
7-Days Rain: 1.02 in
7-Days ET: 1.04 in
7-Day: 0.023 in water in deficit of what evaporated in last 7 days.0.023 in
July: 6.97 in water in excess of what evaporated this month.6.97 in
Support this Site!
Your donation helps support this site
HIGHS: LOWS:
98.6°F
3-Jul-2018		 -19.8°F
16-Jan-2009
Daytime Records
  96.3°F
10-Jun-2008		   0.1°F
24-Jan-2011
Nitetime Records
  87.1°F
20-Jul-2013		   -9.2°F
14-Feb-2016
ICN:4 | S3C2:1| Ajax 3.xx
ISS:Ok | CON:4.6 | RCP:100%
1 Rain season: Jan 1st to Dec 31st.   2 Snow season July 1st to June 30th.   3 Snow manually measured usually around 6AM and 9PM.   4 Updated at Noon Eastern Time.   5 Estimated amount of water needed to replace the water used by plants and evaporation from the past week. (Negative numbers mean amount of water needed, positive numbers mean excess water is present).   6 Air Quality Index is updated hourly between the hours of 6AM and Midnight.   10 Historical average only to day 26 of just the month of July for this station since 2006.   11 Historical average rain this season to day 26 of July for this station since 2006.
 NWS Weather Forecast  -   Outlook Tonight & Tuesday
Tonight

Mostly Clear
Mostly Clear
Lo ≈63°F 		NWS forecast: Mostly clear, with a low around 63. Northwest wind 0 to 5 mph.
Local station forecast: Mostly clear. A slight chance of showers and thunderstorms late this evening. Lows in the lower 60s. Light and variable winds. Chance of rain 20 percent. 		Tuesday

Thunder storm
Thunder storm
Hi ≈85°F 		NWS forecast: A slight chance of showers and thunderstorms between 2pm and 4pm, then a chance of showers and thunderstorms between 4pm and 5pm, then a chance of showers and thunderstorms. Sunny, with a high near 85. West wind around 5 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible.
 NWS Short Term Weather Forecast
Tuesday
Night
Thunder storm
Thunder storm
Lo ≈59°F		 Wednesday

Chance rain
Chance rain
Hi ≈76°F		 Wednesday
Night
Chance rain
Chance rain
Lo ≈55°F		 Thursday

Thunder storm
Thunder storm
Hi ≈75°F		 Thursday
Night
Thunder storm
Thunder storm
Lo ≈60°F		 Friday

Chance rain
Chance rain
Hi ≈74°F		 Friday
Night
Chance rain
Chance rain
Lo ≈54°F
Animated icons courtesy of www.meteotreviglio.com
Precipitation average-to-date script courtesy of Murry Conarroe
Version 6.92 - 09-Feb-2014 - Script Mods by: BurnsvilleWeatherLIVE.com